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/**************   SEARCH FIELD   *****************/


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/*************   INTRO TO CHEM PROBLEMS   ****************/


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/*************   OPEN NEW WINDOW   ****************/


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/**************    INTRO TO CHEM SHOW MOV    ********************/


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/*************   CHEM MODULES MOLE LECTURE PROBLEMS   ****************/


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function mlProb45down() {
	document.getElementById("mlProb45answer").style.visibility = "visible";
}

function mlProb45up() {
	document.getElementById("mlProb45answer").style.visibility = "hidden";
}

function mlProb46aDown() {
	document.getElementById("mlProb46aAnswer").style.visibility = "visible";
}

function mlProb46aUp() {
	document.getElementById("mlProb46aAnswer").style.visibility = "hidden";
}

function mlProb46bDown() {
	document.getElementById("mlProb46bAnswer").style.visibility = "visible";
}

function mlProb46bUp() {
	document.getElementById("mlProb46bAnswer").style.visibility = "hidden";
}

function mlProb46cDown() {
	document.getElementById("mlProb46cAnswer").style.visibility = "visible";
}

function mlProb46cUp() {
	document.getElementById("mlProb46cAnswer").style.visibility = "hidden";
}

function mlProb47down() {
	document.getElementById("mlProb47answer").style.visibility = "visible";
}

function mlProb47up() {
	document.getElementById("mlProb47answer").style.visibility = "hidden";
}

function mlProb48down() {
	document.getElementById("mlProb48answer").style.visibility = "visible";
}

function mlProb48up() {
	document.getElementById("mlProb48answer").style.visibility = "hidden";
}

function mlProb49down() {
	document.getElementById("mlProb49answer").style.visibility = "visible";
}

function mlProb49up() {
	document.getElementById("mlProb49answer").style.visibility = "hidden";
}

function mlProb50down() {
	document.getElementById("mlProb50answer").style.visibility = "visible";
}

function mlProb50up() {
	document.getElementById("mlProb50answer").style.visibility = "hidden";
}

function mlProb51down() {
	document.getElementById("mlProb51answer").style.visibility = "visible";
}

function mlProb51up() {
	document.getElementById("mlProb51answer").style.visibility = "hidden";
}

function mlProb52down() {
	document.getElementById("mlProb52answer").style.visibility = "visible";
}

function mlProb52up() {
	document.getElementById("mlProb52answer").style.visibility = "hidden";
}

function mlProb53down() {
	document.getElementById("mlProb53answer").style.visibility = "visible";
}

function mlProb53up() {
	document.getElementById("mlProb53answer").style.visibility = "hidden";
}

function mlProb54down() {
	document.getElementById("mlProb54answer").style.visibility = "visible";
}

function mlProb54up() {
	document.getElementById("mlProb54answer").style.visibility = "hidden";
}

function mlProb55down() {
	document.getElementById("mlProb55answer").style.visibility = "visible";
}

function mlProb55up() {
	document.getElementById("mlProb55answer").style.visibility = "hidden";
}

function mlProb56down() {
	document.getElementById("mlProb56answer").style.visibility = "visible";
}

function mlProb56up() {
	document.getElementById("mlProb56answer").style.visibility = "hidden";
}

function mlProb57down() {
	document.getElementById("mlProb57answer").style.visibility = "visible";
}

function mlProb57up() {
	document.getElementById("mlProb57answer").style.visibility = "hidden";
}

function mlProb58down() {
	document.getElementById("mlProb58answer").style.visibility = "visible";
}

function mlProb58up() {
	document.getElementById("mlProb58answer").style.visibility = "hidden";
}

function mlProb59down() {
	document.getElementById("mlProb59answer").style.visibility = "visible";
}

function mlProb59up() {
	document.getElementById("mlProb59answer").style.visibility = "hidden";
}

function mlProb60down() {
	document.getElementById("mlProb60answer").style.visibility = "visible";
}

function mlProb60up() {
	document.getElementById("mlProb60answer").style.visibility = "hidden";
}

function mlProb61aDown() {
	document.getElementById("mlProb61aAnswer").style.visibility = "visible";
}

function mlProb61aUp() {
	document.getElementById("mlProb61aAnswer").style.visibility = "hidden";
}

function mlProb61bDown() {
	document.getElementById("mlProb61bAnswer").style.visibility = "visible";
}

function mlProb61bUp() {
	document.getElementById("mlProb61bAnswer").style.visibility = "hidden";
}

function mlProb61cDown() {
	document.getElementById("mlProb61cAnswer").style.visibility = "visible";
}

function mlProb61cUp() {
	document.getElementById("mlProb61cAnswer").style.visibility = "hidden";
}

function mlProb62aDown() {
	document.getElementById("mlProb62aAnswer").style.visibility = "visible";
}

function mlProb62aUp() {
	document.getElementById("mlProb62aAnswer").style.visibility = "hidden";
}

function mlProb62bDown() {
	document.getElementById("mlProb62bAnswer").style.visibility = "visible";
}

function mlProb62bUp() {
	document.getElementById("mlProb62bAnswer").style.visibility = "hidden";
}

function mlProb62cDown() {
	document.getElementById("mlProb62cAnswer").style.visibility = "visible";
}

function mlProb62cUp() {
	document.getElementById("mlProb62cAnswer").style.visibility = "hidden";
}

function mlProb63down() {
	document.getElementById("mlProb63answer").style.visibility = "visible";
}

function mlProb63up() {
	document.getElementById("mlProb63answer").style.visibility = "hidden";
}

function mlProb64down() {
	document.getElementById("mlProb64answer").style.visibility = "visible";
}

function mlProb64up() {
	document.getElementById("mlProb64answer").style.visibility = "hidden";
}

function mlProb65down() {
	document.getElementById("mlProb65answer").style.visibility = "visible";
}

function mlProb65up() {
	document.getElementById("mlProb65answer").style.visibility = "hidden";
}

function mlProb66down() {
	document.getElementById("mlProb66answer").style.visibility = "visible";
}

function mlProb66up() {
	document.getElementById("mlProb66answer").style.visibility = "hidden";
}

function mlProb67down() {
	document.getElementById("mlProb67answer").style.visibility = "visible";
}

function mlProb67up() {
	document.getElementById("mlProb67answer").style.visibility = "hidden";
}

function mlProb68down() {
	document.getElementById("mlProb68answer").style.visibility = "visible";
}

function mlProb68up() {
	document.getElementById("mlProb68answer").style.visibility = "hidden";
}

function mlProb69down() {
	document.getElementById("mlProb69answer").style.visibility = "visible";
}

function mlProb69up() {
	document.getElementById("mlProb69answer").style.visibility = "hidden";
}

function mlProb70aDown() {
	document.getElementById("mlProb70aAnswer").style.visibility = "visible";
}

function mlProb70aUp() {
	document.getElementById("mlProb70aAnswer").style.visibility = "hidden";
}

function mlProb70bDown() {
	document.getElementById("mlProb70bAnswer").style.visibility = "visible";
}

function mlProb70bUp() {
	document.getElementById("mlProb70bAnswer").style.visibility = "hidden";
}

function mlProb70cDown() {
	document.getElementById("mlProb70cAnswer").style.visibility = "visible";
}

function mlProb70cUp() {
	document.getElementById("mlProb70cAnswer").style.visibility = "hidden";
}

function mlProb71down() {
	document.getElementById("mlProb71answer").style.visibility = "visible";
}

function mlProb71up() {
	document.getElementById("mlProb71answer").style.visibility = "hidden";
}

function mlProb72down() {
	document.getElementById("mlProb72answer").style.visibility = "visible";
}

function mlProb72up() {
	document.getElementById("mlProb72answer").style.visibility = "hidden";
}

function mlProb73aDown() {
	document.getElementById("mlProb73aAnswer").style.visibility = "visible";
}

function mlProb73aUp() {
	document.getElementById("mlProb73aAnswer").style.visibility = "hidden";
}

function mlProb74aDown() {
	document.getElementById("mlProb74aAnswer").style.visibility = "visible";
}

function mlProb74aUp() {
	document.getElementById("mlProb74aAnswer").style.visibility = "hidden";
}

function mlProb74bDown() {
	document.getElementById("mlProb74bAnswer").style.visibility = "visible";
}

function mlProb74bUp() {
	document.getElementById("mlProb74bAnswer").style.visibility = "hidden";
}

function mlProb74cDown() {
	document.getElementById("mlProb74cAnswer").style.visibility = "visible";
}

function mlProb74cUp() {
	document.getElementById("mlProb74cAnswer").style.visibility = "hidden";
}

function mlProb75aDown() {
	document.getElementById("mlProb75aAnswer").style.visibility = "visible";
}

function mlProb75aUp() {
	document.getElementById("mlProb75aAnswer").style.visibility = "hidden";
}

function mlProb75bDown() {
	document.getElementById("mlProb75bAnswer").style.visibility = "visible";
}

function mlProb75bUp() {
	document.getElementById("mlProb75bAnswer").style.visibility = "hidden";
}

function mlProb75cDown() {
	document.getElementById("mlProb75cAnswer").style.visibility = "visible";
}

function mlProb75cUp() {
	document.getElementById("mlProb75cAnswer").style.visibility = "hidden";
}

function mlProb76down() {
	document.getElementById("mlProb76answer").style.visibility = "visible";
}

function mlProb76up() {
	document.getElementById("mlProb76answer").style.visibility = "hidden";
}

function mlProb77down() {
	document.getElementById("mlProb77answer").style.visibility = "visible";
}

function mlProb77up() {
	document.getElementById("mlProb77answer").style.visibility = "hidden";
}


/*************   CHEM MODULES MOLE LECTURE DEFINITIONS   ****************/

function defineNucleusDown() {
	document.getElementById("defineNucleus").style.display = "block";
}

function defineNucleusUp() {
	document.getElementById("defineNucleus").style.display = "none";
}

function defineSymbolDown() {
	document.getElementById("defineSymbol").style.display = "block";
}

function defineSymbolUp() {
	document.getElementById("defineSymbol").style.display = "none";
}

function definePeriodicDown() {
	document.getElementById("definePeriodic").style.display = "block";
}

function definePeriodicUp() {
	document.getElementById("definePeriodic").style.display = "none";
}

function defineAverageDown() {
	document.getElementById("defineAverage").style.display = "block";
}

function defineAverageUp() {
	document.getElementById("defineAverage").style.display = "none";
}

function definePercentageDown() {
	document.getElementById("definePercentage").style.display = "block";
}

function definePercentageUp() {
	document.getElementById("definePercentage").style.display = "none";
}


/*************   CHEM MODULES MOLE METHOD PROBLEMS   ****************/


function mmProb1_1down() {
	document.getElementById("mmProb1step1").style.display = "block";
}

function mmProb1_2down() {
	document.getElementById("mmProb1step2").style.display = "block";
}

function mmProb1_3down() {
	document.getElementById("mmProb1step3").style.display = "block";
}

function mmProb1_3up() {
	document.getElementById("mmProb1step1").style.display = "none";
	document.getElementById("mmProb1step2").style.display = "none";
	document.getElementById("mmProb1step3").style.display = "none";
}

function mmProb2_1down() {
	document.getElementById("mmProb2step1").style.display = "block";
}

function mmProb2_2down() {
	document.getElementById("mmProb2step2").style.display = "block";
}

function mmProb2_3down() {
	document.getElementById("mmProb2step3").style.display = "block";
}

function mmProb2_4down() {
	document.getElementById("mmProb2step4").style.display = "block";
}

function mmProb2_5down() {
	document.getElementById("mmProb2step5").style.display = "block";
}

function mmProb2_5up() {
	document.getElementById("mmProb2step1").style.display = "none";
	document.getElementById("mmProb2step2").style.display = "none";
	document.getElementById("mmProb2step3").style.display = "none";
	document.getElementById("mmProb2step4").style.display = "none";
	document.getElementById("mmProb2step5").style.display = "none";
}

function mmProb3_1down() {
	document.getElementById("mmProb3step1").style.display = "block";
}

function mmProb3_2down() {
	document.getElementById("mmProb3step2").style.display = "block";
}

function mmProb3_3down() {
	document.getElementById("mmProb3step3").style.display = "block";
}

function mmProb3_3up() {
	document.getElementById("mmProb3step1").style.display = "none";
	document.getElementById("mmProb3step2").style.display = "none";
	document.getElementById("mmProb3step3").style.display = "none";
}

function mmProb4_1down() {
	document.getElementById("mmProb4step1").style.display = "block";
}

function mmProb4_2down() {
	document.getElementById("mmProb4step2").style.display = "block";
}

function mmProb4_3down() {
	document.getElementById("mmProb4step3").style.display = "block";
}

function mmProb4_4down() {
	document.getElementById("mmProb4step4").style.display = "block";
}

function mmProb4_4up() {
	document.getElementById("mmProb4step1").style.display = "none";
	document.getElementById("mmProb4step2").style.display = "none";
	document.getElementById("mmProb4step3").style.display = "none";
	document.getElementById("mmProb4step4").style.display = "none";
}

function mmProb5_1down() {
	document.getElementById("mmProb5step1").style.display = "block";
}

function mmProb5_2down() {
	document.getElementById("mmProb5step2").style.display = "block";
}

function mmProb5_3down() {
	document.getElementById("mmProb5step3").style.display = "block";
}

function mmProb5_4down() {
	document.getElementById("mmProb5step4").style.display = "block";
}

function mmProb5_5down() {
	document.getElementById("mmProb5step5").style.display = "block";
}

function mmProb5_5up() {
	document.getElementById("mmProb5step1").style.display = "none";
	document.getElementById("mmProb5step2").style.display = "none";
	document.getElementById("mmProb5step3").style.display = "none";
	document.getElementById("mmProb5step4").style.display = "none";
	document.getElementById("mmProb5step5").style.display = "none";
}

function mmProb6_1down() {
	document.getElementById("mmProb6step1").style.display = "block";
}

function mmProb6_2down() {
	document.getElementById("mmProb6step2").style.display = "block";
}

function mmProb6_3down() {
	document.getElementById("mmProb6step3").style.display = "block";
}

function mmProb6_3up() {
	document.getElementById("mmProb6step1").style.display = "none";
	document.getElementById("mmProb6step2").style.display = "none";
	document.getElementById("mmProb6step3").style.display = "none";
}

function mmProb7_1down() {
	document.getElementById("mmProb7step1").style.display = "block";
}

function mmProb7_2down() {
	document.getElementById("mmProb7step2").style.display = "block";
}

function mmProb7_3down() {
	document.getElementById("mmProb7step3").style.display = "block";
}

function mmProb7_4down() {
	document.getElementById("mmProb7step4").style.display = "block";
}

function mmProb7_4up() {
	document.getElementById("mmProb7step1").style.display = "none";
	document.getElementById("mmProb7step2").style.display = "none";
	document.getElementById("mmProb7step3").style.display = "none";
	document.getElementById("mmProb7step4").style.display = "none";
}

function mmProb8_1down() {
	document.getElementById("mmProb8step1").style.display = "block";
}

function mmProb8_2down() {
	document.getElementById("mmProb8step2").style.display = "block";
}

function mmProb8_3down() {
	document.getElementById("mmProb8step3").style.display = "block";
}

function mmProb8_4down() {
	document.getElementById("mmProb8step4").style.display = "block";
}

function mmProb8_4up() {
	document.getElementById("mmProb8step1").style.display = "none";
	document.getElementById("mmProb8step2").style.display = "none";
	document.getElementById("mmProb8step3").style.display = "none";
	document.getElementById("mmProb8step4").style.display = "none";
}

function mmProb9_1down() {
	document.getElementById("mmProb9step1").style.display = "block";
}

function mmProb9_2down() {
	document.getElementById("mmProb9step2").style.display = "block";
}

function mmProb9_3down() {
	document.getElementById("mmProb9step3").style.display = "block";
}

function mmProb9_3up() {
	document.getElementById("mmProb9step1").style.display = "none";
	document.getElementById("mmProb9step2").style.display = "none";
	document.getElementById("mmProb9step3").style.display = "none";
}

function mmProb10_1down() {
	document.getElementById("mmProb10step1").style.display = "block";
}

function mmProb10_2down() {
	document.getElementById("mmProb10step2").style.display = "block";
}


function mmProb10_2up() {
	document.getElementById("mmProb10step1").style.display = "none";
	document.getElementById("mmProb10step2").style.display = "none";
}

function mmProb11_1down() {
	document.getElementById("mmProb11step1").style.display = "block";
}

function mmProb11_2down() {
	document.getElementById("mmProb11step2").style.display = "block";
}

function mmProb11_3down() {
	document.getElementById("mmProb11step3").style.display = "block";
}

function mmProb11_3up() {
	document.getElementById("mmProb11step1").style.display = "none";
	document.getElementById("mmProb11step2").style.display = "none";
	document.getElementById("mmProb11step3").style.display = "none";
}


//////////////// CHEM MODULES STOICHIOMETRY METHOD PROBLEMS //////////////////


function smProb1_1down() {
	document.getElementById("smProb1step1").style.display = "block";
}

function smProb1_2down() {
	document.getElementById("smProb1step2").style.display = "block";
}

function smProb1_3down() {
	document.getElementById("smProb1step3").style.display = "block";
}

function smProb1_4down() {
	document.getElementById("smProb1step4").style.display = "block";
}

function smProb1_5down() {
	document.getElementById("smProb1step5").style.display = "block";
}

function smProb1_6down() {
	document.getElementById("smProb1step6").style.display = "block";
}

function smProb1_7down() {
	document.getElementById("smProb1step7").style.display = "block";
}

function smProb1_8down() {
	document.getElementById("smProb1step8").style.display = "block";
}

function smProb1_8up() {
	document.getElementById("smProb1step1").style.display = "none";
	document.getElementById("smProb1step2").style.display = "none";
	document.getElementById("smProb1step3").style.display = "none";
	document.getElementById("smProb1step4").style.display = "none";
	document.getElementById("smProb1step5").style.display = "none";
	document.getElementById("smProb1step6").style.display = "none";
	document.getElementById("smProb1step7").style.display = "none";
	document.getElementById("smProb1step8").style.display = "none";
}

function smProb2_1down() {
	document.getElementById("smProb2step1").style.display = "block";
}

function smProb2_2down() {
	document.getElementById("smProb2step2").style.display = "block";
}

function smProb2_3down() {
	document.getElementById("smProb2step3").style.display = "block";
}

function smProb2_4down() {
	document.getElementById("smProb2step4").style.display = "block";
}

function smProb2_5down() {
	document.getElementById("smProb2step5").style.display = "block";
}

function smProb2_6down() {
	document.getElementById("smProb2step6").style.display = "block";
}

function smProb2_6up() {
	document.getElementById("smProb2step1").style.display = "none";
	document.getElementById("smProb2step2").style.display = "none";
	document.getElementById("smProb2step3").style.display = "none";
	document.getElementById("smProb2step4").style.display = "none";
	document.getElementById("smProb2step5").style.display = "none";
	document.getElementById("smProb2step6").style.display = "none";
}

function smProb3_1down() {
	document.getElementById("smProb3step1").style.display = "block";
}

function smProb3_2down() {
	document.getElementById("smProb3step2").style.display = "block";
}

function smProb3_3down() {
	document.getElementById("smProb3step3").style.display = "block";
}

function smProb3_4down() {
	document.getElementById("smProb3step4").style.display = "block";
}

function smProb3_5down() {
	document.getElementById("smProb3step5").style.display = "block";
}

function smProb3_6down() {
	document.getElementById("smProb3step6").style.display = "block";
}

function smProb3_6up() {
	document.getElementById("smProb3step1").style.display = "none";
	document.getElementById("smProb3step2").style.display = "none";
	document.getElementById("smProb3step3").style.display = "none";
	document.getElementById("smProb3step4").style.display = "none";
	document.getElementById("smProb3step5").style.display = "none";
	document.getElementById("smProb3step6").style.display = "none";
}

function smProb4_1down() {
	document.getElementById("smProb4step1").style.display = "block";
}

function smProb4_2down() {
	document.getElementById("smProb4step2").style.display = "block";
}

function smProb4_3down() {
	document.getElementById("smProb4step3").style.display = "block";
}

function smProb4_3up() {
	document.getElementById("smProb4step1").style.display = "none";
	document.getElementById("smProb4step2").style.display = "none";
	document.getElementById("smProb4step3").style.display = "none";
}

function smProb5_1down() {
	document.getElementById("smProb5step1").style.display = "block";
}

function smProb5_2down() {
	document.getElementById("smProb5step2").style.display = "block";
}

function smProb5_3down() {
	document.getElementById("smProb5step3").style.display = "block";
}

function smProb5_4down() {
	document.getElementById("smProb5step4").style.display = "block";
}

function smProb5_5down() {
	document.getElementById("smProb5step5").style.display = "block";
}

function smProb5_5up() {
	document.getElementById("smProb5step1").style.display = "none";
	document.getElementById("smProb5step2").style.display = "none";
	document.getElementById("smProb5step3").style.display = "none";
	document.getElementById("smProb5step4").style.display = "none";
	document.getElementById("smProb5step5").style.display = "none";
}

function smProb6_1down() {
	document.getElementById("smProb6step1").style.display = "block";
}

function smProb6_2down() {
	document.getElementById("smProb6step2").style.display = "block";
}

function smProb6_3down() {
	document.getElementById("smProb6step3").style.display = "block";
}

function smProb6_4down() {
	document.getElementById("smProb6step4").style.display = "block";
}

function smProb6_5down() {
	document.getElementById("smProb6step5").style.display = "block";
}

function smProb6_5up() {
	document.getElementById("smProb6step1").style.display = "none";
	document.getElementById("smProb6step2").style.display = "none";
	document.getElementById("smProb6step3").style.display = "none";
	document.getElementById("smProb6step4").style.display = "none";
	document.getElementById("smProb6step5").style.display = "none";
}

function smProb7_1down() {
	document.getElementById("smProb7step1").style.display = "block";
}

function smProb7_2down() {
	document.getElementById("smProb7step2").style.display = "block";
}

function smProb7_3down() {
	document.getElementById("smProb7step3").style.display = "block";
}

function smProb7_4down() {
	document.getElementById("smProb7step4").style.display = "block";
}

function smProb7_5down() {
	document.getElementById("smProb7step5").style.display = "block";
}

function smProb7_6down() {
	document.getElementById("smProb7step6").style.display = "block";
}

function smProb7_7down() {
	document.getElementById("smProb7step7").style.display = "block";
}

function smProb7_7up() {
	document.getElementById("smProb7step1").style.display = "none";
	document.getElementById("smProb7step2").style.display = "none";
	document.getElementById("smProb7step3").style.display = "none";
	document.getElementById("smProb7step4").style.display = "none";
	document.getElementById("smProb7step5").style.display = "none";
	document.getElementById("smProb7step6").style.display = "none";
	document.getElementById("smProb7step7").style.display = "none";
}


/*************  CHEM MODULES STOICHIOMETRY LECTURE PROBLEMS  **********************/


function slProb1down() {
	document.getElementById("slProb1answer").style.visibility = "visible";
}

function slProb1up() {
	document.getElementById("slProb1answer").style.visibility = "hidden";
}

function slProb2aDown() {
	document.getElementById("slProb2aAnswer").style.visibility = "visible";
}

function slProb2aUp() {
	document.getElementById("slProb2aAnswer").style.visibility = "hidden";
}

function slProb2bDown() {
	document.getElementById("slProb2bAnswer").style.visibility = "visible";
}

function slProb2bUp() {
	document.getElementById("slProb2bAnswer").style.visibility = "hidden";
}

function slProb2cDown() {
	document.getElementById("slProb2cAnswer").style.visibility = "visible";
}

function slProb2cUp() {
	document.getElementById("slProb2cAnswer").style.visibility = "hidden";
}

function slProb3down() {
	document.getElementById("slProb3answer").style.visibility = "visible";
}

function slProb3up() {
	document.getElementById("slProb3answer").style.visibility = "hidden";
}

function slProb4down() {
	document.getElementById("slProb4answer").style.visibility = "visible";
}

function slProb4up() {
	document.getElementById("slProb4answer").style.visibility = "hidden";
}

function slProb5down() {
	document.getElementById("slProb5answer").style.visibility = "visible";
}

function slProb5up() {
	document.getElementById("slProb5answer").style.visibility = "hidden";
}

function slProb6down() {
	document.getElementById("slProb6answer").style.visibility = "visible";
}

function slProb6up() {
	document.getElementById("slProb6answer").style.visibility = "hidden";
}

function slProb7down() {
	document.getElementById("slProb7answer").style.visibility = "visible";
}

function slProb7up() {
	document.getElementById("slProb7answer").style.visibility = "hidden";
}

function slProb8down() {
	document.getElementById("slProb8answer").style.visibility = "visible";
}

function slProb8up() {
	document.getElementById("slProb8answer").style.visibility = "hidden";
}

function slProb9down() {
	document.getElementById("slProb9answer").style.visibility = "visible";
}

function slProb9up() {
	document.getElementById("slProb9answer").style.visibility = "hidden";
}

function slProb10down() {
	document.getElementById("slProb10answer").style.visibility = "visible";
}

function slProb10up() {
	document.getElementById("slProb10answer").style.visibility = "hidden";
}

function slProb11down() {
	document.getElementById("slProb11answer").style.visibility = "visible";
}

function slProb11up() {
	document.getElementById("slProb11answer").style.visibility = "hidden";
}

function slProb12down() {
	document.getElementById("slProb12answer").style.visibility = "visible";
}

function slProb12up() {
	document.getElementById("slProb12answer").style.visibility = "hidden";
}

function slProb13down() {
	document.getElementById("slProb13answer").style.visibility = "visible";
}

function slProb13up() {
	document.getElementById("slProb13answer").style.visibility = "hidden";
}

function slProb14down() {
	document.getElementById("slProb14answer").style.visibility = "visible";
}

function slProb14up() {
	document.getElementById("slProb14answer").style.visibility = "hidden";
}

function slProb15down() {
	document.getElementById("slProb15answer").style.visibility = "visible";
}

function slProb15up() {
	document.getElementById("slProb15answer").style.visibility = "hidden";
}

function slProb16down() {
	document.getElementById("slProb16answer").style.visibility = "visible";
}

function slProb16up() {
	document.getElementById("slProb16answer").style.visibility = "hidden";
}

function slProb17down() {
	document.getElementById("slProb17answer").style.visibility = "visible";
}

function slProb17up() {
	document.getElementById("slProb17answer").style.visibility = "hidden";
}

function slProb18down() {
	document.getElementById("slProb18answer").style.visibility = "visible";
}

function slProb18up() {
	document.getElementById("slProb18answer").style.visibility = "hidden";
}

function slProb19down() {
	document.getElementById("slProb19answer").style.visibility = "visible";
}

function slProb19up() {
	document.getElementById("slProb19answer").style.visibility = "hidden";
}

function slProb20down() {
	document.getElementById("slProb20answer").style.visibility = "visible";
}

function slProb20up() {
	document.getElementById("slProb20answer").style.visibility = "hidden";
}

function slProb21down() {
	document.getElementById("slProb21answer").style.visibility = "visible";
}

function slProb21up() {
	document.getElementById("slProb21answer").style.visibility = "hidden";
}

function slProb22down() {
	document.getElementById("slProb22answer").style.visibility = "visible";
}

function slProb22up() {
	document.getElementById("slProb22answer").style.visibility = "hidden";
}

function slProb23down() {
	document.getElementById("slProb23answer").style.visibility = "visible";
}

function slProb23up() {
	document.getElementById("slProb23answer").style.visibility = "hidden";
}

function slProb24aDown() {
	document.getElementById("slProb24aAnswer").style.visibility = "visible";
}

function slProb24aUp() {
	document.getElementById("slProb24aAnswer").style.visibility = "hidden";
}

function slProb24bDown() {
	document.getElementById("slProb24bAnswer").style.visibility = "visible";
}

function slProb24bUp() {
	document.getElementById("slProb24bAnswer").style.visibility = "hidden";
}

function slProb24cDown() {
	document.getElementById("slProb24cAnswer").style.visibility = "visible";
}

function slProb24cUp() {
	document.getElementById("slProb24cAnswer").style.visibility = "hidden";
}

function slProb25aDown() {
	document.getElementById("slProb25aAnswer").style.visibility = "visible";
}

function slProb25aUp() {
	document.getElementById("slProb25aAnswer").style.visibility = "hidden";
}

function slProb25bDown() {
	document.getElementById("slProb25bAnswer").style.visibility = "visible";
}

function slProb25bUp() {
	document.getElementById("slProb25bAnswer").style.visibility = "hidden";
}

function slProb25cDown() {
	document.getElementById("slProb25cAnswer").style.visibility = "visible";
}

function slProb25cUp() {
	document.getElementById("slProb25cAnswer").style.visibility = "hidden";
}

function slProb26down() {
	document.getElementById("slProb26answer").style.visibility = "visible";
}

function slProb26up() {
	document.getElementById("slProb26answer").style.visibility = "hidden";
}

function slProb27down() {
	document.getElementById("slProb27answer").style.visibility = "visible";
}

function slProb27up() {
	document.getElementById("slProb27answer").style.visibility = "hidden";
}

function slProb28down() {
	document.getElementById("slProb28answer").style.visibility = "visible";
}

function slProb28up() {
	document.getElementById("slProb28answer").style.visibility = "hidden";
}

function slProb29down() {
	document.getElementById("slProb29answer").style.visibility = "visible";
}

function slProb29up() {
	document.getElementById("slProb29answer").style.visibility = "hidden";
}

function slProb30down() {
	document.getElementById("slProb30answer").style.visibility = "visible";
}

function slProb30up() {
	document.getElementById("slProb30answer").style.visibility = "hidden";
}

function slProb31down() {
	document.getElementById("slProb31answer").style.visibility = "visible";
}

function slProb31up() {
	document.getElementById("slProb31answer").style.visibility = "hidden";
}

function slProb32down() {
	document.getElementById("slProb32answer").style.visibility = "visible";
}

function slProb32up() {
	document.getElementById("slProb32answer").style.visibility = "hidden";
}

function slProb33down() {
	document.getElementById("slProb33answer").style.visibility = "visible";
}

function slProb33up() {
	document.getElementById("slProb33answer").style.visibility = "hidden";
}

function slProb34down() {
	document.getElementById("slProb34answer").style.visibility = "visible";
}

function slProb34up() {
	document.getElementById("slProb34answer").style.visibility = "hidden";
}

function slProb35down() {
	document.getElementById("slProb35answer").style.visibility = "visible";
}

function slProb35up() {
	document.getElementById("slProb35answer").style.visibility = "hidden";
}

function slProb36down() {
	document.getElementById("slProb36answer").style.visibility = "visible";
}

function slProb36up() {
	document.getElementById("slProb36answer").style.visibility = "hidden";
}

function slProb37down() {
	document.getElementById("slProb37answer").style.visibility = "visible";
}

function slProb37up() {
	document.getElementById("slProb37answer").style.visibility = "hidden";
}

function slProb38down() {
	document.getElementById("slProb38answer").style.visibility = "visible";
}

function slProb38up() {
	document.getElementById("slProb38answer").style.visibility = "hidden";
}

function slProb39down() {
	document.getElementById("slProb39answer").style.visibility = "visible";
}

function slProb39up() {
	document.getElementById("slProb39answer").style.visibility = "hidden";
}

function slProb40down() {
	document.getElementById("slProb40answer").style.visibility = "visible";
}

function slProb40up() {
	document.getElementById("slProb40answer").style.visibility = "hidden";
}

function slProb41down() {
	document.getElementById("slProb41answer").style.visibility = "visible";
}

function slProb41up() {
	document.getElementById("slProb41answer").style.visibility = "hidden";
}

function slProb42down() {
	document.getElementById("slProb42answer").style.visibility = "visible";
}

function slProb42up() {
	document.getElementById("slProb42answer").style.visibility = "hidden";
}

function slProb43down() {
	document.getElementById("slProb43answer").style.visibility = "visible";
}

function slProb43up() {
	document.getElementById("slProb43answer").style.visibility = "hidden";
}

function slProb44down() {
	document.getElementById("slProb44answer").style.visibility = "visible";
}

function slProb44up() {
	document.getElementById("slProb44answer").style.visibility = "hidden";
}

function slProb45down() {
	document.getElementById("slProb45answer").style.visibility = "visible";
}

function slProb45up() {
	document.getElementById("slProb45answer").style.visibility = "hidden";
}

function slProb46down() {
	document.getElementById("slProb46answer").style.visibility = "visible";
}

function slProb46up() {
	document.getElementById("slProb46answer").style.visibility = "hidden";
}

function slProb47down() {
	document.getElementById("slProb47answer").style.visibility = "visible";
}

function slProb47up() {
	document.getElementById("slProb47answer").style.visibility = "hidden";
}

function slProb48down() {
	document.getElementById("slProb48answer").style.visibility = "visible";
}

function slProb48up() {
	document.getElementById("slProb48answer").style.visibility = "hidden";
}


function slProb49down() {
	document.getElementById("slProb49answer").style.visibility = "visible";
}

function slProb49up() {
	document.getElementById("slProb49answer").style.visibility = "hidden";
}

function slProb50down() {
	document.getElementById("slProb50answer").style.visibility = "visible";
}

function slProb50up() {
	document.getElementById("slProb50answer").style.visibility = "hidden";
}

function slProb51down() {
	document.getElementById("slProb51answer").style.visibility = "visible";
}

function slProb51up() {
	document.getElementById("slProb51answer").style.visibility = "hidden";
}

function slProb52down() {
	document.getElementById("slProb52answer").style.visibility = "visible";
}

function slProb52up() {
	document.getElementById("slProb52answer").style.visibility = "hidden";
}

function slProb53down() {
	document.getElementById("slProb53answer").style.visibility = "visible";
}

function slProb53up() {
	document.getElementById("slProb53answer").style.visibility = "hidden";
}

function slProb54down() {
	document.getElementById("slProb54answer").style.visibility = "visible";
}

function slProb54up() {
	document.getElementById("slProb54answer").style.visibility = "hidden";
}

function slProb55down() {
	document.getElementById("slProb55answer").style.visibility = "visible";
}

function slProb55up() {
	document.getElementById("slProb55answer").style.visibility = "hidden";
}

function slProb56down() {
	document.getElementById("slProb56answer").style.visibility = "visible";
}

function slProb56up() {
	document.getElementById("slProb56answer").style.visibility = "hidden";
}

function slProb57down() {
	document.getElementById("slProb57answer").style.visibility = "visible";
}

function slProb57up() {
	document.getElementById("slProb57answer").style.visibility = "hidden";
}

function slProb58down() {
	document.getElementById("slProb58answer").style.visibility = "visible";
}

function slProb58up() {
	document.getElementById("slProb58answer").style.visibility = "hidden";
}

function slProb59down() {
	document.getElementById("slProb59answer").style.visibility = "visible";
}

function slProb59up() {
	document.getElementById("slProb59answer").style.visibility = "hidden";
}

function slProb60down() {
	document.getElementById("slProb60answer").style.visibility = "visible";
}

function slProb60up() {
	document.getElementById("slProb60answer").style.visibility = "hidden";
}

function slProb61down() {
	document.getElementById("slProb61answer").style.visibility = "visible";
}

function slProb61up() {
	document.getElementById("slProb61answer").style.visibility = "hidden";
}


////////////////// STOICHIOMETRY MULTIPLE CHOICE ///////////////////////


function smcProb1aDown() {
	document.getElementById("smcProb1answer").innerHTML = "Incorrect<br>This is the coefficient for O<sub>2</sub>, but the mole ratio of ethane to O<sub>2</sub> is 7/2.";
}

function smcProb1aUp() {
	document.getElementById("smcProb1answer").innerHTML = "";
}

function smcProb1bDown() {
	document.getElementById("smcProb1answer").innerHTML = "Incorrect<br>This is the coefficient for ethane, but it is the mole ratio of O<sub>2</sub> to ethane that is important.";
}

function smcProb1bUp() {
	document.getElementById("smcProb1answer").innerHTML = "";
}

function smcProb1cDown() {
	document.getElementById("smcProb1answer").innerHTML = "Correct<br>1 mole C<sub>2</sub>H<sub>6</sub> x (7 mole O<sub>2</sub>/2 mole C<sub>2</sub>H<sub>6</sub>) = 7/2 mole O<sub>2</sub>";
}

function smcProb1cUp() {
	document.getElementById("smcProb1answer").innerHTML = "";
}

function smcProb2aDown() {
	document.getElementById("smcProb2answer").innerHTML = "Incorrect<br>This is the coefficient of O<sub>2</sub>, but we need the relationship between the coefficients of CO<sub>2</sub> and O<sub>2</sub>.";
}

function smcProb2aUp() {
	document.getElementById("smcProb2answer").innerHTML = "";
}

function smcProb2bDown() {
	document.getElementById("smcProb2answer").innerHTML = "Incorrect<br>7 moles of O<sub>2</sub> form 4 moles of CO<sub>2</sub>. Thus, the number of moles of CO<sub>2</sub> must be smaller.";
}

function smcProb2bUp() {
	document.getElementById("smcProb2answer").innerHTML = "";
}

function smcProb2cDown() {
	document.getElementById("smcProb2answer").innerHTML = "Correct<br>1 mole O<sub>2</sub> x (4 mole CO<sub>2</sub> / 7 mole O<sub>2</sub> ) = 4/7 mole CO<sub>2</sub>";
}

function smcProb2cUp() {
	document.getElementById("smcProb2answer").innerHTML = "";
}

function smcProb3aDown() {
	document.getElementById("smcProb3answer").innerHTML = "Correct<br>5 mole C<sub>2</sub>H<sub>6</sub> x (4 mole CO<sub>2</sub> / 2 mole C<sub>2</sub>H<sub>6</sub>) = 10 mole CO<sub>2</sub>";
}

function smcProb3aUp() {
	document.getElementById("smcProb3answer").innerHTML = "";
}

function smcProb3bDown() {
	document.getElementById("smcProb3answer").innerHTML = "Incorrect<br>Look at the ratio of coefficients of CO<sub>2</sub> and ethane.";
}

function smcProb3bUp() {
	document.getElementById("smcProb3answer").innerHTML = "";
}

function smcProb3cDown() {
	document.getElementById("smcProb3answer").innerHTML = "Incorrect<br>Look at the ratio of coefficients of CO<sub>2</sub> and ethane.";
}

function smcProb3cUp() {
	document.getElementById("smcProb3answer").innerHTML = "";
}

function smcProb4aDown() {
	document.getElementById("smcProb4answer").innerHTML = "Incorrect<br>100 mL provides 0.01 mole, but the equation:<br>2 HCl + Na<sub>2</sub>CO<sub>3</sub> &rarr; H<sub>2</sub>CO<sub>3</sub> + 2 NaCl<br>indicates that 0.02 mole of HCl will be required.";
}

function smcProb4aUp() {
	document.getElementById("smcProb4answer").innerHTML = "";
}

function smcProb4bDown() {
	document.getElementById("smcProb4answer").innerHTML = "Correct<br>200 mL provides 0.02 mole, required by the equation:<br>2 HCl + Na<sub>2</sub>CO<sub>3</sub> &rarr; H<sub>2</sub>CO<sub>3</sub> + 2 NaCl";
}

function smcProb4bUp() {
	document.getElementById("smcProb4answer").innerHTML = "";
}

function smcProb4cDown() {
	document.getElementById("smcProb4answer").innerHTML = "Incorrect<br>100 mL provides 0.01 mole, but the equation:<br>2 HCl + Na<sub>2</sub>CO<sub>3</sub> &rarr; H<sub>2</sub>CO<sub>3</sub> + 2 NaCl<br>indicates that 0.02 mole of HCl will be required.";
}

function smcProb4cUp() {
	document.getElementById("smcProb4answer").innerHTML = "";
}

function smcProb5aDown() {
	document.getElementById("smcProb5answer").innerHTML = "Incorrect<br>You probably used Al as the limiting reagent. Notice that three times more moles of HCl are required than Al.";
}

function smcProb5aUp() {
	document.getElementById("smcProb5answer").innerHTML = "";
}

function smcProb5bDown() {
	document.getElementById("smcProb5answer").innerHTML = "Incorrect<br>You probably assumed a 1 to 1 mole ratio between reactants and products.";
}

function smcProb5bUp() {
	document.getElementById("smcProb5answer").innerHTML = "";
}

function smcProb5cDown() {
	document.getElementById("smcProb5answer").innerHTML = "Correct<br>2.7 g Al is 0.10 mole, 100 mL of 1 M HCl is 0.10 mole. The equation requires 3 moles of HCl for every mole of Al. Thus, HCl is the limiting reagent.<br>0.10 mole HCl x (3 mole H<sub>2</sub> / 6 mole HCl) = 0.05 mole H<sub>2</sub><br>0.05 mole H<sub>2</sub> x 22.4 L/mole at STP = 1.1 L";
}

function smcProb5cUp() {
	document.getElementById("smcProb5answer").innerHTML = "";
}

function smcProb6aDown() {
	document.getElementById("smcProb6answer").innerHTML = "Correct<br>The equation:<br>Fe<sub>3</sub>O<sub>4</sub> + H<sub>2</sub> &rarr; 3 FeO + H<sub>2</sub>O<br>shows a one to one mole ratio between Fe<sub>3</sub>O<sub>4</sub> and H<sub>2</sub>. 2.3 g of Fe<sub>3</sub>O<sub>4</sub> is 0.01 mole (molar mass = 231 g/mole) and therefore 0.01 mole of H<sub>2</sub> is required. At STP 0.01 mole is 0.01 x 22.4 L/mole = 0.22 L.";
}

function smcProb6aUp() {
	document.getElementById("smcProb6answer").innerHTML = "";
}

function smcProb6bDown() {
	document.getElementById("smcProb6answer").innerHTML = "Incorrect<br>Check your equation.";
}

function smcProb6bUp() {
	document.getElementById("smcProb6answer").innerHTML = "";
}

function smcProb6cDown() {
	document.getElementById("smcProb6answer").innerHTML = "Incorrect<br>Check your equation.";
}

function smcProb6cUp() {
	document.getElementById("smcProb6answer").innerHTML = "";
}

function smcProb7aDown() {
	document.getElementById("smcProb7answer").innerHTML = "Incorrect<br>Check your equation.";
}

function smcProb7aUp() {
	document.getElementById("smcProb7answer").innerHTML = "";
}

function smcProb7bDown() {
	document.getElementById("smcProb7answer").innerHTML = "Incorrect<br>Check your equation.";
}

function smcProb7bUp() {
	document.getElementById("smcProb7answer").innerHTML = "";
}

function smcProb7cDown() {
	document.getElementById("smcProb7answer").innerHTML = "Correct<br>The equation:<br>2 H<sub>2</sub> + CO &rarr; CH<sub>3</sub>OH<br>shows that 0.05 mole of CO would require 0.10 mole of H<sub>2</sub>. But only 0.05 mole H<sub>2</sub> is present and produces only 0.025 mole CH<sub>3</sub>OH.";
}

function smcProb7cUp() {
	document.getElementById("smcProb7answer").innerHTML = "";
}

function smcProb8aDown() {
	document.getElementById("smcProb8answer").innerHTML = "Incorrect<br>You have probably used Cu as the limiting reagent, but it is in excess.";
}

function smcProb8aUp() {
	document.getElementById("smcProb8answer").innerHTML = "";
}

function smcProb8bDown() {
	document.getElementById("smcProb8answer").innerHTML = "Correct<br>There is 0.039 mole of I<sub>2</sub> and 0.16 mole Cu. Clearly, I<sub>2</sub> is the limiting reagent.<br>0.039 mole I<sub>2</sub> x (2 mole CuI / 1 mole I<sub>2</sub> ) = 0.078 mole CuI, or 15 g";
}

function smcProb8bUp() {
	document.getElementById("smcProb8answer").innerHTML = "";
}

function smcProb8cDown() {
	document.getElementById("smcProb8answer").innerHTML = "Incorrect<br>You have probably used a one to one mole ratio between I<sub>2</sub> and CuI";
}

function smcProb8cUp() {
	document.getElementById("smcProb8answer").innerHTML = "";
}

function smcProb9aDown() {
	document.getElementById("smcProb9answer").innerHTML = "Correct<br>As shown in the previous problem the theoretical yield is 15 g. If 5 g are actually obtain the percent yield is (5 g / 15 g) x 100 = 33%.";
}

function smcProb9aUp() {
	document.getElementById("smcProb9answer").innerHTML = "";
}

function smcProb9bDown() {
	document.getElementById("smcProb9answer").innerHTML = "Incorrect<br>See the previous problem.";
}

function smcProb9bUp() {
	document.getElementById("smcProb9answer").innerHTML = "";
}

function smcProb9cDown() {
	document.getElementById("smcProb9answer").innerHTML = "Incorrect<br>See the previous problem.";
}

function smcProb9cUp() {
	document.getElementById("smcProb9answer").innerHTML = "";
}

function smcProb10aDown() {
	document.getElementById("smcProb10answer").innerHTML = "Incorrect<br>Check the coefficients in the equation.";
}

function smcProb10aUp() {
	document.getElementById("smcProb10answer").innerHTML = "";
}

function smcProb10bDown() {
	document.getElementById("smcProb10answer").innerHTML = "Incorrect<br>Check the coefficients in the equation.";
}

function smcProb10bUp() {
	document.getElementById("smcProb10answer").innerHTML = "";
}

function smcProb10cDown() {
	document.getElementById("smcProb10answer").innerHTML = "Correct<br>(0.4020 g/134.0 g/mole) = 3.000 x 10<sup>-3</sup> moles Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub><br>3.000 x 10<sup>-3</sup> moles x (2 NaMnO<sub>4</sub> / 5 Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub>) = 1.200 x 10<sup>-3</sup> moles NaMnO<sub>4</sub><br>(1.200 x 10<sup>-3</sup> moles NaMnO<sub>4</sub> / 0.03055 L) = 0.03928 M";
}

function smcProb10cUp() {
	document.getElementById("smcProb10answer").innerHTML = "";
}

function smcProb11aDown() {
	document.getElementById("smcProb11answer").innerHTML = "Correct<br>A look at the previous question will show that there is a 5 to 2 mole ratio of Na2C2O4 to NaMnO4 . The 30.55 mL of 0.03928 M NaMnO4 contains:<br>0.03055 L x 0.03928 mole/L = 1.200 x 10-3 moles NaMnO4<br>which will react with:<br>1.200 x 10<sup>-3</sup> moles x (5 mole Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub> / 2 mole NaMnO<sub>4</sub>) = 3.000 x 10<sup>-3</sup> mole Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub><br>3.000 x 10<sup>-3</sup> mole Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub> x 134.0 g/mole = 0.4020 g Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub><br>(0.4020 g Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub> / 5.104 g sample) x 100 = 7.876% Na2C<sub>2</sub>O<sub>4</sub> per sample";
}

function smcProb11aUp() {
	document.getElementById("smcProb11answer").innerHTML = "";
}

function smcProb11bDown() {
	document.getElementById("smcProb11answer").innerHTML = "Incorrect<br>See (a).";
}

function smcProb11bUp() {
	document.getElementById("smcProb11answer").innerHTML = "";
}

function smcProb11cDown() {
	document.getElementById("smcProb11answer").innerHTML = "Incorrect<br>See (a).";
}

function smcProb11cUp() {
	document.getElementById("smcProb11answer").innerHTML = "";
}

function smcProb12aDown() {
	document.getElementById("smcProb12answer").innerHTML = "Incorrect<br>See problem 11.";
}

function smcProb12aUp() {
	document.getElementById("smcProb12answer").innerHTML = "";
}

function smcProb12bDown() {
	document.getElementById("smcProb12answer").innerHTML = "Correct<br>This question is the reverse of the previous one. The sample of pure Na2C2O4 contains 0.4020 g/(134.0 g/mole) = 3.000 x 10-3 mole. According to the equataion:<br>2 NaMnO<sub>4</sub> + 5 Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub> + 8 H<sub>2</sub>SO<sub>4</sub> &rarr; 6 Na<sub>2</sub>SO<sub>4</sub> + 2 MnSO<sub>4</sub> + 10 CO<sub>2</sub> + 8 H<sub>2</sub>O<br>3.000 x 10<sup>-3</sup> mole Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub> x (2 NaMnO<sub>4</sub> / 5 Na<sub>2</sub>C<sub>2</sub>O<sub>4</sub>) = 1.200 x 10<sup>-3</sup> mole NaMnO<sub>4</sub><br>(1.200 x 10<sup>-3</sup> mole NaMnO<sub>4</sub> / 0.03055 L) = 0.03928 M NaMnO<sub>4</sub>";
}

function smcProb12bUp() {
	document.getElementById("smcProb12answer").innerHTML = "";
}

function smcProb12cDown() {
	document.getElementById("smcProb12answer").innerHTML = "Incorrect<br>See problem 11.";
}

function smcProb12cUp() {
	document.getElementById("smcProb12answer").innerHTML = "";
}

function smcProb13down() {
	document.getElementById("smcProb13answer").innerHTML = "3";
}

function smcProb13up() {
	document.getElementById("smcProb13answer").innerHTML = "";
}

function smcProb14down() {
	document.getElementById("smcProb14answer").innerHTML = "2";
}

function smcProb14up() {
	document.getElementById("smcProb14answer").innerHTML = "";
}

function smcProb15down() {
	document.getElementById("smcProb15answer").innerHTML = "1 to 2";
}

function smcProb15up() {
	document.getElementById("smcProb15answer").innerHTML = "";
}

function smcProb16down() {
	document.getElementById("smcProb16answer").innerHTML = "1 to 2";
}

function smcProb16up() {
	document.getElementById("smcProb16answer").innerHTML = "";
}

function smcProb17down() {
	document.getElementById("smcProb17answer").innerHTML = "4";
}

function smcProb17up() {
	document.getElementById("smcProb17answer").innerHTML = "";
}

function smcProb18down() {
	document.getElementById("smcProb18answer").innerHTML = "0.3 moles";
}

function smcProb18up() {
	document.getElementById("smcProb18answer").innerHTML = "";
}

function smcProb19down() {
	document.getElementById("smcProb19answer").innerHTML = "2.7 x 10<sup>7</sup> g";
}

function smcProb19up() {
	document.getElementById("smcProb19answer").innerHTML = "";
}

function smcProb20down() {
	document.getElementById("smcProb20answer").innerHTML = "623 g";
}

function smcProb20up() {
	document.getElementById("smcProb20answer").innerHTML = "";
}

function smcProb21down() {
	document.getElementById("smcProb21answer").innerHTML = "13 moles";
}

function smcProb21up() {
	document.getElementById("smcProb21answer").innerHTML = "";
}

function smcProb22down() {
	document.getElementById("smcProb22answer").innerHTML = "1.5 g";
}

function smcProb22up() {
	document.getElementById("smcProb22answer").innerHTML = "";
}

function smcProb23down() {
	document.getElementById("smcProb23answer").innerHTML = "1090 g";
}

function smcProb23up() {
	document.getElementById("smcProb23answer").innerHTML = "";
}

function smcProb24down() {
	document.getElementById("smcProb24answer").innerHTML = "1.8 g";
}

function smcProb24up() {
	document.getElementById("smcProb24answer").innerHTML = "";
}

function smcProb25down() {
	document.getElementById("smcProb25answer").innerHTML = "4.0";
}

function smcProb25up() {
	document.getElementById("smcProb25answer").innerHTML = "";
}

function smcProb26down() {
	document.getElementById("smcProb26answer").innerHTML = "6.2 g";
}

function smcProb26up() {
	document.getElementById("smcProb26answer").innerHTML = "";
}

function smcProb27down() {
	document.getElementById("smcProb27answer").innerHTML = "13.5 g";
}

function smcProb27up() {
	document.getElementById("smcProb27answer").innerHTML = "";
}

function smcProb28down() {
	document.getElementById("smcProb28answer").innerHTML = "17.9%";
}

function smcProb28up() {
	document.getElementById("smcProb28answer").innerHTML = "";
}

function smcProb29down() {
	document.getElementById("smcProb29answer").innerHTML = "66.48%";
}

function smcProb29up() {
	document.getElementById("smcProb29answer").innerHTML = "";
}

function smcProb30down() {
	document.getElementById("smcProb30answer").innerHTML = "0.1909 M";
}

function smcProb30up() {
	document.getElementById("smcProb30answer").innerHTML = "";
}

function smcProb31down() {
	document.getElementById("smcProb31answer").innerHTML = "7.772%";
}

function smcProb31up() {
	document.getElementById("smcProb31answer").innerHTML = "";
}

function smcProb32down() {
	document.getElementById("smcProb32answer").innerHTML = "67.51%";
}

function smcProb32up() {
	document.getElementById("smcProb32answer").innerHTML = "";
}


/////////////////// CHEM MODULES GASES LECTURE DEFINITIONS //////////////////////


function defineSizeDown() {
	document.getElementById("defineSize").style.display = "block";
}

function defineSizeUp() {
	document.getElementById("defineSize").style.display = "none";
}

function defineNewtonDown() {
	document.getElementById("defineNewton").style.display = "block";
}

function defineNewtonUp() {
	document.getElementById("defineNewton").style.display = "none";
}


/////////////////// CHEM MODULES GASES LECTURE PROBLEMS /////////////////////////


function glProb1down() {
	document.getElementById("glProb1answer").innerHTML = "No, the 'effective' volume is much larger than the average volume of an isolated molecule and therefore the molecules are separated from one another (on average) by a considerable distance.";
}

function glProb1up() {
	document.getElementById("glProb1answer").innerHTML = "";
}

function glProb2aDown() {
	document.getElementById("glProb2answer").innerHTML = "Incorrect";
}

function glProb2aUp() {
	document.getElementById("glProb2answer").innerHTML = "";
}

function glProb2bDown() {
	document.getElementById("glProb2answer").innerHTML = "Incorrect";
}

function glProb2bUp() {
	document.getElementById("glProb2answer").innerHTML = "";
}

function glProb2cDown() {
	document.getElementById("glProb2answer").innerHTML = "Correct<br>As you ascend a mountain, for example, Pike's Peak, the distance from the center of the earth increases and the pull of gravity decreases. Thus, the higher we go, the fewer molecules of N<sub>2</sub> and O<sub>2</sub> are prevented from leaving the atmosphere. At heights of 10000 feet some people experience altitude sickness due to lack of oxygen and at heights above 18000 feet bottles of oxygen are necessary to supplement the oxygen in the atmosphere.";
}

function glProb2cUp() {
	document.getElementById("glProb2answer").innerHTML = "";
}

function glProb3aDown() {
	document.getElementById("glProb3answer").innerHTML = "Incorrect";
}

function glProb3aUp() {
	document.getElementById("glProb3answer").innerHTML = "";
}

function glProb3bDown() {
	document.getElementById("glProb3answer").innerHTML = "Correct<br>This means that if we double the pressure the volume will decrease by a factor of 2.";
}

function glProb3bUp() {
	document.getElementById("glProb3answer").innerHTML = "";
}

function glProb3cDown() {
	document.getElementById("glProb3answer").innerHTML = "Incorrect";
}

function glProb3cUp() {
	document.getElementById("glProb3answer").innerHTML = "";
}

function glProb4down() {
	document.getElementById("glProb4answer").innerHTML = "The pressure has increased by a factor of 150 kPa / 100 kPa = 1.50 and the volume must decrease by the same factor. Thus, the volume will fall from 10 L to 10 L / 1.50 = 6.7 L. Notice, that this is equivalent to multiplying 10 L by (100 kPa / 150 kPa) :<br>(10 L x 100 kPa) / 150 kPa = 6.7 L<br>It is always important to think about your answer for a minute. Is it reasonable to have a new volume that is smaller than the old? Yes, because an increase in pressure should produce a smaller volume. Or, in other words, you are reaffirming the inverse relationship between volume and pressure.";
}

function glProb4up() {
	document.getElementById("glProb4answer").innerHTML = "";
}

function glProb5down() {
	document.getElementById("glProb5answer").innerHTML = "The volume has decreased by a factor of 10 L / 5.0 L = 2.0. Hence, the pressure must increase by the same factor:<br>(100 kPa x 10 L) / 5.0 L = 200 kPa";
}

function glProb5up() {
	document.getElementById("glProb5answer").innerHTML = "";
}

function glProb6down() {
	document.getElementById("glProb6answer").innerHTML = "273 mL + (273 mL x (1/273)/(1&deg;C) x 10 &deg;C) = 283 mL";
}

function glProb6up() {
	document.getElementById("glProb6answer").innerHTML = "";
}

function glProb7down() {
	document.getElementById("glProb7answer").innerHTML = "273 mL - (273 x (1/273)/&deg;C x 273) = 0<br>This calculation shows that at a temperature of -273 &deg;C, according to Charles's observations, the volume of a gas should be zero. Of course, this could not in fact occur because as the temperature decreases the molecules will acquire slower velocities and at the boiling point they will coalesce into the liquid state and then upon further cooling the velocities will slow even further until, at the freezing point, the solid state is achieved. Nevertheless, this temperature of -273 &deg;C is termed the absolute zero of temperature and represents the starting point of the absolute or Kelvin temperature scale.";
}

function glProb7up() {
	document.getElementById("glProb7answer").innerHTML = "";
}

function glProb8down() {
	document.getElementById("glProb8answer").innerHTML = "K = &deg;C + 273";
}

function glProb8up() {
	document.getElementById("glProb8answer").innerHTML = "";
}

function glProb9down() {
	document.getElementById("glProb9answer").innerHTML = "Remembering that we need absolute temperature we first convert to K :<br>-50 &deg;C = 223 K, 0 &deg;C = 273 K<br>Because volume is directly proportional to T, the new volume will be:<br>100 mL x (273/223) = 122 mL<br>Notice that the increase in temperature means that the new volume must be larger, not smaller, than the original volume.";
}

function glProb9up() {
	document.getElementById("glProb9answer").innerHTML = "";
}

function glProb10down() {
	document.getElementById("glProb10answer").innerHTML = "If the volume decreases by a factor of 50100 , the absolute temperature must decrease by the same factor. Thus, the new temperature will be:<br>(273 K x 50)/100 = 137 K";
}

function glProb10up() {
	document.getElementById("glProb10answer").innerHTML = "";
}

function glProb11aDown() {
	document.getElementById("glProb11answer").innerHTML = "Correct<br>As the temperature is increased the energy of the molecules and their velocities increase, they impact the walls of the container with greater force and more molecules impact the walls per unit area. Consequently, the pressure must increase.";
}

function glProb11aUp() {
	document.getElementById("glProb11answer").innerHTML = "";
}

function glProb11bDown() {
	document.getElementById("glProb11answer").innerHTML = "Incorrect<br>As the temperature is increased the energy of the molecules and their velocities increase, they impact the walls of the container with greater force and more molecules impact the walls per unit area. Consequently, the pressure must increase.";
}

function glProb11bUp() {
	document.getElementById("glProb11answer").innerHTML = "";
}

function glProb11cDown() {
	document.getElementById("glProb11answer").innerHTML = "Incorrect<br>If we allowed the volume to expand as the temperature increased, the pressure could remain constant. But, in fact, the volume remains constant.";
}

function glProb11cUp() {
	document.getElementById("glProb11answer").innerHTML = "";
}

function glProb12down() {
	document.getElementById("glProb12answer").innerHTML = "2.2 atm x (373 K / 283 K) = 2.9 atm";
}

function glProb12up() {
	document.getElementById("glProb12answer").innerHTML = "";
}

function glProb13down() {
	document.getElementById("glProb13answer").innerHTML = "First, we determine the volume at 10 &deg;C.<br>0.10 L x (283 / 323) = 0.088 L<br>Next, we use x as the pressure necessary to bring the volume to 0.20 L.<br>0.088 L x (x torr / 700 torr) = 0.20 L<br>x = 1.6 x 10<sup>3</sup> torr";
}

function glProb13up() {
	document.getElementById("glProb13answer").innerHTML = "";
}

function glProb14aDown() {
	document.getElementById("glProb14answer").innerHTML = "Incorrect<br>Avogardro found that equal volumes contain equal numbers of moles. Thus, one liter of any gas at STP contains 0.045 moles of molecules.";
}

function glProb14aUp() {
	document.getElementById("glProb14answer").innerHTML = "";
}

function glProb14bDown() {
	document.getElementById("glProb14answer").innerHTML = "Correct<br>The nature of the gas, according to Avogadro, is unimportant. If one liter of one gas contains 0.045 moles, then two liters of any other gas at the same conditions contains twice as many moles (0.090 moles).";
}

function glProb14bUp() {
	document.getElementById("glProb14answer").innerHTML = "";
}

function glProb14cDown() {
	document.getElementById("glProb14answer").innerHTML = "Incorrect<br>The nature of the gas, according to Avogadro, is unimportant. If one liter of one gas contains 0.045 moles, then two liters of any other gas at the same conditions contains twice as many moles (0.090 moles).";
}

function glProb14cUp() {
	document.getElementById("glProb14answer").innerHTML = "";
}

function glProb15down() {
	document.getElementById("glProb15answer").innerHTML = "1.0 g of H<sub>2</sub> is 1.0 g 2.0 g/mole = 0.50 mole<br>It will occupy 0.50 mole x 22.4 L/mole = 11 L";
}

function glProb15up() {
	document.getElementById("glProb15answer").innerHTML = "";
}

function glProb16down() {
	document.getElementById("glProb16answer").innerHTML = "The number of moles = 2.8 g / 28 g/mole = 0.10 mole<br>At STP, 0.10 mole x 22.4 L/mole = 2.24 L<br>At 350 torr and 100 &deg;C, 2.24 L x (760 torr / 350 torr) x (373 K / 273 K) = 6.65 L";
}

function glProb16up() {
	document.getElementById("glProb16answer").innerHTML = "";
}

function glProb17down() {
	document.getElementById("glProb17answer").innerHTML = "The molecular weight of C<sub>2</sub>H<sub>2</sub> = 26 g/mole.<br>Density is mass per volume and one mole occupies 22.4 L at STP.<br>Therefore, (26 g/mole) / (22.4 L/mole) = 1.16 g/L";
}

function glProb17up() {
	document.getElementById("glProb17answer").innerHTML = "";
}

function glProb18down() {
	document.getElementById("glProb18answer").innerHTML = "PV = RnT, or:<br>solving for R, R = PV / nT<br>For one mole at 273 K and 1 atmosphere,<br>R = (1 atm x 22.4 L) / (1 mole x 273 K)<br>= 0.0821 L-atm/K-mole";
}

function glProb18up() {
	document.getElementById("glProb18answer").innerHTML = "";
}

function glProb19down() {
	document.getElementById("glProb19answer").innerHTML = "R = (760 torr x 22.4 L)/ (1 mole x 273 K)<br>= 62.4 L-torr/K-mole";
}

function glProb19up() {
	document.getElementById("glProb19answer").innerHTML = "";
}

function glProb20down() {
	document.getElementById("glProb20answer").innerHTML = "We can solve PV= nRT for n; n = PV/RT.<br>The pressure is 2000 psi / 14.7 psi/atm = 136 atm, and the temperature is 273 + 25 &deg;C = 298 K. Thus:<br>n = PV / RT<br>= (136 atm x 20 L) / (0.0821 L-atm/K-mole x 298 K)<br>= 1.1 x 10<sup>2</sup> moles N<sub>2</sub><br>The mass of 1.1 x 10<sup>2</sup> moles of N<sub>2</sub> is:<br>1.1 x 10<sup>2</sup> moles x 28 g/mole = 3.1 x 10<sup>3</sup> g";
}

function glProb20up() {
	document.getElementById("glProb20answer").innerHTML = "";
}

function glProb21down() {
	document.getElementById("glProb21answer").innerHTML = "We can solve PV = nRT for P:<br>P = nRT/V<br>n = 320 g / 32 g/mole = 10 moles<br>P = (10 moles)(0.0821 L-atm/K-mole)(273 K) / 20 L = 11 atm";
}

function glProb21up() {
	document.getElementById("glProb21answer").innerHTML = "";
}

function glProb22down() {
	document.getElementById("glProb22answer").innerHTML = "We can do this in several ways. First, we calculate the number of moles of gas in one liter:<br>n = PV/RT<br>= (1 atm) (1.000 L) /((0.0821 L-atm/K-mole) (273 K))<br>= 0.0446 moles<br>This number of moles has a mass of 0.850 g and the molecular weight is:<br>0.850 g / 0.0446 moles = 19.1 g/mole<br>We could also simply recognize that at STP one mole occupies 22.4 L, and that therefore 1.000 L is:<br>1.000 L / 22.4 L/mole = 0.0446 mole<br>This number of moles has a mass of 0.850 g and the molecular weight is:<br>0.850 g / 0.0446 moles = 19.1 g/mole<br>Finally, we could use the density to rewrite PV = nRT. Notice that the number of moles is mass/M (the molecular weight). Thus, we can write:<br>PV = (mass/M)RT<br>P = ((mass/M)(RT))/ V<br>Since mass/V = d, this becomes P = (d/M)RT,<br>which we can rearrange in terms of M:<br>M = (d/P)RT<br>M = (d/P)RT = ((0.850 g/L)(0.0821 L-atm/K-mole)(273 K))/1 atm<br>= 19.1 g/mole.";
}

function glProb22up() {
	document.getElementById("glProb22answer").innerHTML = "";
}

function glProb23down() {
	document.getElementById("glProb23answer").innerHTML = "48.1 g/mole";
}

function glProb23up() {
	document.getElementById("glProb23answer").innerHTML = "";
}

function glProb24down() {
	document.getElementById("glProb24answer").innerHTML = "The total number of moles of gases is 0.1 + 0.3 + 0.6 = 1.0. The fraction of moles due to the H<sub>2</sub> is 0.11.0 = 0.1 and its partial pressure is 0.1 x 1 atm = 0.1 atm. Likewise, for the other gases, 0.3 atm for N<sub>2</sub> , 0.6 atm for O<sub>2</sub>.";
}

function glProb24up() {
	document.getElementById("glProb24answer").innerHTML = "";
}


////////////////// CHEM MODULES GASES METHODOLOGY /////////////////////////


function gmProb1_1down() {
	document.getElementById("gmProb1step1").style.display = "block";
}

function gmProb1_2down() {
	document.getElementById("gmProb1step2").style.display = "block";
}

function gmProb1_3down() {
	document.getElementById("gmProb1step3").style.display = "block";
}

function gmProb1_4down() {
	document.getElementById("gmProb1step4").style.display = "block";
}

function gmProb1_5down() {
	document.getElementById("gmProb1step5").style.display = "block";
}

function gmProb1_6down() {
	document.getElementById("gmProb1step6").style.display = "block";
}

function gmProb1_7down() {
	document.getElementById("gmProb1step7").style.display = "block";
}

function gmProb1_7up() {
	document.getElementById("gmProb1step1").style.display = "none";
	document.getElementById("gmProb1step2").style.display = "none";
	document.getElementById("gmProb1step3").style.display = "none";
	document.getElementById("gmProb1step4").style.display = "none";
	document.getElementById("gmProb1step5").style.display = "none";
	document.getElementById("gmProb1step6").style.display = "none";
	document.getElementById("gmProb1step7").style.display = "none";
}

function gmProb2_1down() {
	document.getElementById("gmProb2step1").style.display = "block";
}

function gmProb2_2down() {
	document.getElementById("gmProb2step2").style.display = "block";
}

function gmProb2_3down() {
	document.getElementById("gmProb2step3").style.display = "block";
}

function gmProb2_4down() {
	document.getElementById("gmProb2step4").style.display = "block";
}

function gmProb2_5down() {
	document.getElementById("gmProb2step5").style.display = "block";
}

function gmProb2_5up() {
	document.getElementById("gmProb2step1").style.display = "none";
	document.getElementById("gmProb2step2").style.display = "none";
	document.getElementById("gmProb2step3").style.display = "none";
	document.getElementById("gmProb2step4").style.display = "none";
	document.getElementById("gmProb2step5").style.display = "none";
}

function gmProb3_1down() {
	document.getElementById("gmProb3step1").style.display = "block";
}

function gmProb3_2down() {
	document.getElementById("gmProb3step2").style.display = "block";
}

function gmProb3_3down() {
	document.getElementById("gmProb3step3").style.display = "block";
}

function gmProb3_4down() {
	document.getElementById("gmProb3step4").style.display = "block";
}

function gmProb3_4up() {
	document.getElementById("gmProb3step1").style.display = "none";
	document.getElementById("gmProb3step2").style.display = "none";
	document.getElementById("gmProb3step3").style.display = "none";
	document.getElementById("gmProb3step4").style.display = "none";
}

function gmProb4_1down() {
	document.getElementById("gmProb4step1").style.display = "block";
}

function gmProb4_2down() {
	document.getElementById("gmProb4step2").style.display = "block";
}

function gmProb4_3down() {
	document.getElementById("gmProb4step3").style.display = "block";
}

function gmProb4_3up() {
	document.getElementById("gmProb4step1").style.display = "none";
	document.getElementById("gmProb4step2").style.display = "none";
	document.getElementById("gmProb4step3").style.display = "none";
}

function gmProb5_1down() {
	document.getElementById("gmProb5step1").style.display = "block";
}

function gmProb5_2down() {
	document.getElementById("gmProb5step2").style.display = "block";
}

function gmProb5_3down() {
	document.getElementById("gmProb5step3").style.display = "block";
}

function gmProb5_4down() {
	document.getElementById("gmProb5step4").style.display = "block";
}

function gmProb5_5down() {
	document.getElementById("gmProb5step5").style.display = "block";
}

function gmProb5_5up() {
	document.getElementById("gmProb5step1").style.display = "none";
	document.getElementById("gmProb5step2").style.display = "none";
	document.getElementById("gmProb5step3").style.display = "none";
	document.getElementById("gmProb5step4").style.display = "none";
	document.getElementById("gmProb5step5").style.display = "none";
}

function gmProb6_1down() {
	document.getElementById("gmProb6step1").style.display = "block";
}

function gmProb6_2down() {
	document.getElementById("gmProb6step2").style.display = "block";
}

function gmProb6_3down() {
	document.getElementById("gmProb6step3").style.display = "block";
}

function gmProb6_4down() {
	document.getElementById("gmProb6step4").style.display = "block";
}

function gmProb6_4up() {
	document.getElementById("gmProb6step1").style.display = "none";
	document.getElementById("gmProb6step2").style.display = "none";
	document.getElementById("gmProb6step3").style.display = "none";
	document.getElementById("gmProb6step4").style.display = "none";
}

function gmProb7_1down() {
	document.getElementById("gmProb7step1").style.display = "block";
}

function gmProb7_2down() {
	document.getElementById("gmProb7step2").style.display = "block";
}

function gmProb7_3down() {
	document.getElementById("gmProb7step3").style.display = "block";
}

function gmProb7_4down() {
	document.getElementById("gmProb7step4").style.display = "block";
}

function gmProb7_4up() {
	document.getElementById("gmProb7step1").style.display = "none";
	document.getElementById("gmProb7step2").style.display = "none";
	document.getElementById("gmProb7step3").style.display = "none";
	document.getElementById("gmProb7step4").style.display = "none";
}

function gmProb8_1down() {
	document.getElementById("gmProb8step1").style.display = "block";
}

function gmProb8_2down() {
	document.getElementById("gmProb8step2").style.display = "block";
}

function gmProb8_3down() {
	document.getElementById("gmProb8step3").style.display = "block";
}

function gmProb8_3up() {
	document.getElementById("gmProb8step1").style.display = "none";
	document.getElementById("gmProb8step2").style.display = "none";
	document.getElementById("gmProb8step3").style.display = "none";
}

function gmProb9_1down() {
	document.getElementById("gmProb9step1").style.display = "block";
}

function gmProb9_2down() {
	document.getElementById("gmProb9step2").style.display = "block";
}

function gmProb9_3down() {
	document.getElementById("gmProb9step3").style.display = "block";
}

function gmProb9_4down() {
	document.getElementById("gmProb9step4").style.display = "block";
}

function gmProb9_4up() {
	document.getElementById("gmProb9step1").style.display = "none";
	document.getElementById("gmProb9step2").style.display = "none";
	document.getElementById("gmProb9step3").style.display = "none";
	document.getElementById("gmProb9step4").style.display = "none";
}

function gmProb10_1down() {
	document.getElementById("gmProb10step1").style.display = "block";
}

function gmProb10_2down() {
	document.getElementById("gmProb10step2").style.display = "block";
}

function gmProb10_3down() {
	document.getElementById("gmProb10step3").style.display = "block";
}

function gmProb10_3up() {
	document.getElementById("gmProb10step1").style.display = "none";
	document.getElementById("gmProb10step2").style.display = "none";
	document.getElementById("gmProb10step3").style.display = "none";
}

function gmProb11_1down() {
	document.getElementById("gmProb11step1").style.display = "block";
}

function gmProb11_2down() {
	document.getElementById("gmProb11step2").style.display = "block";
}

function gmProb11_3down() {
	document.getElementById("gmProb11step3").style.display = "block";
}

function gmProb11_3up() {
	document.getElementById("gmProb11step1").style.display = "none";
	document.getElementById("gmProb11step2").style.display = "none";
	document.getElementById("gmProb11step3").style.display = "none";
}

function gmProb12_1down() {
	document.getElementById("gmProb12step1").style.display = "block";
}

function gmProb12_2down() {
	document.getElementById("gmProb12step2").style.display = "block";
}

function gmProb12_2up() {
	document.getElementById("gmProb12step1").style.display = "none";
	document.getElementById("gmProb12step2").style.display = "none";
}


//////////////////// CHEM MODULES GASES MULTIPLE CHOICE ///////////////////////////


function gmcProb1aDown() {
	document.getElementById("gmcProb1answer").innerHTML = "Incorrect<br>Volume and pressure are inversely proportional. If the pressure increases, the volume decreases.";
}

function gmcProb1aUp() {
	document.getElementById("gmcProb1answer").innerHTML = "";
}

function gmcProb1bDown() {
	document.getElementById("gmcProb1answer").innerHTML = "Correct<br>(450 torr x 1.0 L) / 10 L = 45 torr";
}

function gmcProb1bUp() {
	document.getElementById("gmcProb1answer").innerHTML = "";
}

function gmcProb1cDown() {
	document.getElementById("gmcProb1answer").innerHTML = "Incorrect<br>This is the standard pressure but has no bearing on the problem.";
}

function gmcProb1cUp() {
	document.getElementById("gmcProb1answer").innerHTML = "";
}

function gmcProb2aDown() {
	document.getElementById("gmcProb2answer").innerHTML = "Incorrect<br>Volume and pressure are inversely proportional. If the pressure decreases, the volume increases.";
}

function gmcProb2aUp() {
	document.getElementById("gmcProb2answer").innerHTML = "";
}

function gmcProb2bDown() {
	document.getElementById("gmcProb2answer").innerHTML = "Incorrect<br>Volume and pressure are inversely proportional. If the pressure decreases, the volume increases.";
}

function gmcProb2bUp() {
	document.getElementById("gmcProb2answer").innerHTML = "";
}

function gmcProb2cDown() {
	document.getElementById("gmcProb2answer").innerHTML = "Correct<br>1.0 L x (2 atm/ 1atm) = 2.0 L";
}

function gmcProb2cUp() {
	document.getElementById("gmcProb2answer").innerHTML = "";
}

function gmcProb3aDown() {
	document.getElementById("gmcProb3answer").innerHTML = "Incorrect<br>Volume is directly proportional to absolute temperature. If the temperature doubles, the volume doubles.";
}

function gmcProb3aUp() {
	document.getElementById("gmcProb3answer").innerHTML = "";
}

function gmcProb3bDown() {
	document.getElementById("gmcProb3answer").innerHTML = "Incorrect<br>Volume is directly proportional to absolute temperature. If the temperature doubles, the volume doubles.";
}

function gmcProb3bUp() {
	document.getElementById("gmcProb3answer").innerHTML = "";
}

function gmcProb3cDown() {
	document.getElementById("gmcProb3answer").innerHTML = "Correct<br>1.0 L x (546 K/ 273 K) = 2.0 L";
}

function gmcProb3cUp() {
	document.getElementById("gmcProb3answer").innerHTML = "";
}

function gmcProb4aDown() {
	document.getElementById("gmcProb4answer").innerHTML = "Incorrect<br>Pressure is directly proportional to absolute temperature (the absolute temperature has increased by a factor of 323 K/298 K.)";
}

function gmcProb4aUp() {
	document.getElementById("gmcProb4answer").innerHTML = "";
}

function gmcProb4bDown() {
	document.getElementById("gmcProb4answer").innerHTML = "Incorrect<br>Pressure is directly proportional to absolute temperature (the absolute temperature has increased by a factor of 323 K/298 K.)";
}

function gmcProb4bUp() {
	document.getElementById("gmcProb4answer").innerHTML = "";
}

function gmcProb4cDown() {
	document.getElementById("gmcProb4answer").innerHTML = "Correct<br>670 torr x (323 K / 298 K) = 726 torr";
}

function gmcProb4cUp() {
	document.getElementById("gmcProb4answer").innerHTML = "";
}

function gmcProb5aDown() {
	document.getElementById("gmcProb5answer").innerHTML = "Incorrect<br>Because the absolute temperature doubles and the pressure doubles, the volume remains the same.";
}

function gmcProb5aUp() {
	document.getElementById("gmcProb5answer").innerHTML = "";
}

function gmcProb5bDown() {
	document.getElementById("gmcProb5answer").innerHTML = "Correct<br>Because the absolute temperature doubles and the pressure doubles, the volume remains the same.";
}

function gmcProb5bUp() {
	document.getElementById("gmcProb5answer").innerHTML = "";
}

function gmcProb5cDown() {
	document.getElementById("gmcProb5answer").innerHTML = "Incorrect<br>Because the absolute temperature doubles and the pressure doubles, the volume remains the same.";
}

function gmcProb5cUp() {
	document.getElementById("gmcProb5answer").innerHTML = "";
}

function gmcProb6aDown() {
	document.getElementById("gmcProb6answer").innerHTML = "Correct<br>1.0 L x (273 K/100 K) x (0.50 atm/1.0 atm) = 1.4 L";
}

function gmcProb6aUp() {
	document.getElementById("gmcProb6answer").innerHTML = "";
}

function gmcProb6bDown() {
	document.getElementById("gmcProb6answer").innerHTML = "Incorrect<br>This accounts only for the change in temperature.";
}

function gmcProb6bUp() {
	document.getElementById("gmcProb6answer").innerHTML = "";
}

function gmcProb6cDown() {
	document.getElementById("gmcProb6answer").innerHTML = "Incorrect<br>This accounts only for the change in temperature.";
}

function gmcProb6cUp() {
	document.getElementById("gmcProb6answer").innerHTML = "";
}

function gmcProb7aDown() {
	document.getElementById("gmcProb7answer").innerHTML = "Correct<br>n = PV/RT = (670 torr/760 torr)(1.00 L) / (0.0821 L-atm/K-mole)(298 K) = 0.036 moles";
}

function gmcProb7aUp() {
	document.getElementById("gmcProb7answer").innerHTML = "";
}

function gmcProb7bDown() {
	document.getElementById("gmcProb7answer").innerHTML = "Incorrect<br>See answer to (a).";
}

function gmcProb7bUp() {
	document.getElementById("gmcProb7answer").innerHTML = "";
}

function gmcProb7cDown() {
	document.getElementById("gmcProb7answer").innerHTML = "Incorrect<br>See answer to (a).";
}

function gmcProb7cUp() {
	document.getElementById("gmcProb7answer").innerHTML = "";
}

function gmcProb8aDown() {
	document.getElementById("gmcProb8answer").innerHTML = "Incorrect<br>2.8 g is 2.8 g 28 g/mole = 0.10 mole, which at STP occupies 2.2 L.";
}

function gmcProb8aUp() {
	document.getElementById("gmcProb8answer").innerHTML = "";
}

function gmcProb8bDown() {
	document.getElementById("gmcProb8answer").innerHTML = "Correct<br>2.8 g is 2.8 g 28 g/mole = 0.10 mole, which at STP occupies 2.2 L.";
}

function gmcProb8bUp() {
	document.getElementById("gmcProb8answer").innerHTML = "";
}

function gmcProb8cDown() {
	document.getElementById("gmcProb8answer").innerHTML = "Incorrect<br>2.8 g is 2.8 g 28 g/mole = 0.10 mole, which at STP occupies 2.2 L.";
}

function gmcProb8cUp() {
	document.getElementById("gmcProb8answer").innerHTML = "";
}

function gmcProb9aDown() {
	document.getElementById("gmcProb9answer").innerHTML = "Correct<br>At STP 2.2 L is 2.2 L 22.4 L/mole = 0.10 mole. If 2.8 g is 0.10 mole, what is the mass of 1.0 mole?";
}

function gmcProb9aUp() {
	document.getElementById("gmcProb9answer").innerHTML = "";
}

function gmcProb9bDown() {
	document.getElementById("gmcProb9answer").innerHTML = "Incorrect<br>At STP 2.2 L is 2.2 L 22.4 L/mole = 0.10 mole. If 2.8 g is 0.10 mole, what is the mass of 1.0 mole?";
}

function gmcProb9bUp() {
	document.getElementById("gmcProb9answer").innerHTML = "";
}

function gmcProb9cDown() {
	document.getElementById("gmcProb9answer").innerHTML = "Incorrect<br>At STP 2.2 L is 2.2 L 22.4 L/mole = 0.10 mole. If 2.8 g is 0.10 mole, what is the mass of 1.0 mole?";
}

function gmcProb9cUp() {
	document.getElementById("gmcProb9answer").innerHTML = "";
}

function gmcProb10aDown() {
	document.getElementById("gmcProb10answer").innerHTML = "Incorrect<br>The number of moles of O<sub>2</sub> is two-thirds of the total number of moles. Thus, it exerts two-thirds of the total pressure.";
}

function gmcProb10aUp() {
	document.getElementById("gmcProb10answer").innerHTML = "";
}

function gmcProb10bDown() {
	document.getElementById("gmcProb10answer").innerHTML = "Incorrect<br>The number of moles of O<sub>2</sub> is two-thirds of the total number of moles. Thus, it exerts two-thirds of the total pressure.";
}

function gmcProb10bUp() {
	document.getElementById("gmcProb10answer").innerHTML = "";
}

function gmcProb10cDown() {
	document.getElementById("gmcProb10answer").innerHTML = "Correct<br>The number of moles of O<sub>2</sub> is two-thirds of the total number of moles. Thus, it exerts two-thirds of the total pressure.";
}

function gmcProb10cUp() {
	document.getElementById("gmcProb10answer").innerHTML = "";
}

function gmcProb11down() {
	document.getElementById("gmcProb11answer").innerHTML = "583 mL";
}

function gmcProb11up() {
	document.getElementById("gmcProb11answer").innerHTML = "";
}

function gmcProb12down() {
	document.getElementById("gmcProb12answer").innerHTML = "246 mL";
}

function gmcProb12up() {
	document.getElementById("gmcProb12answer").innerHTML = "";
}

function gmcProb13down() {
	document.getElementById("gmcProb13answer").innerHTML = "715 mL";
}

function gmcProb13up() {
	document.getElementById("gmcProb13answer").innerHTML = "";
}

function gmcProb14down() {
	document.getElementById("gmcProb14answer").innerHTML = "0.36 g";
}

function gmcProb14up() {
	document.getElementById("gmcProb14answer").innerHTML = "";
}

function gmcProb15down() {
	document.getElementById("gmcProb15answer").innerHTML = "1.96 g/L";
}

function gmcProb15up() {
	document.getElementById("gmcProb15answer").innerHTML = "";
}

function gmcProb16down() {
	document.getElementById("gmcProb16answer").innerHTML = "1.09 g/L";
}

function gmcProb16up() {
	document.getElementById("gmcProb16answer").innerHTML = "";
}

function gmcProb17down() {
	document.getElementById("gmcProb17answer").innerHTML = "4.0 L";
}

function gmcProb17up() {
	document.getElementById("gmcProb17answer").innerHTML = "";
}

function gmcProb18down() {
	document.getElementById("gmcProb18answer").innerHTML = "219 torr";
}

function gmcProb18up() {
	document.getElementById("gmcProb18answer").innerHTML = "";
}

function gmcProb19down() {
	document.getElementById("gmcProb19answer").innerHTML = "0.81 atm";
}

function gmcProb19up() {
	document.getElementById("gmcProb19answer").innerHTML = "";
}

function gmcProb20down() {
	document.getElementById("gmcProb20answer").innerHTML = "46 g/mole";
}

function gmcProb20up() {
	document.getElementById("gmcProb20answer").innerHTML = "";
}

function gmcProb21down() {
	document.getElementById("gmcProb21answer").innerHTML = "10 g/mole";
}

function gmcProb21up() {
	document.getElementById("gmcProb21answer").innerHTML = "";
}

function gmcProb22down() {
	document.getElementById("gmcProb22answer").innerHTML = "0.01 atm";
}

function gmcProb22up() {
	document.getElementById("gmcProb22answer").innerHTML = "";
}

function gmcProb23down() {
	document.getElementById("gmcProb23answer").innerHTML = "3.0 L";
}

function gmcProb23up() {
	document.getElementById("gmcProb23answer").innerHTML = "";
}

function gmcProb24down() {
	document.getElementById("gmcProb24answer").innerHTML = "1.6 x 10<sup>4</sup> g";
}

function gmcProb24up() {
	document.getElementById("gmcProb24answer").innerHTML = "";
}


////////////////////// CHEM LAB GRAVIMETRIC SHOW MOVS //////////////////////////////


function showComplete_mov() {
	document.getElementById("gravimetric_precipitation_mov").innerHTML = "<object classid='clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B' height='196' width='240' codebase='http://www.apple.com/qtactivex/qtplugin.cab'><param name='src' value='movies/complete_precipitation.mov'><param name='autoplay' value='false'><param name='controller' value='true'><embed height='196' width='240' type='video/quicktime' pluginspage='http://www.apple.com/quicktime/download/' src='movies/complete_precipitation.mov' autoplay='false' controller='true'></embed></object>";
}

function showIncomplete_mov() {
	document.getElementById("gravimetric_precipitation_mov").innerHTML = "<object classid='clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B' height='196' width='240' codebase='http://www.apple.com/qtactivex/qtplugin.cab'><param name='src' value='movies/incomplete_precipitation.mov'><param name='autoplay' value='false'><param name='controller' value='true'><embed height='196' width='240' type='video/quicktime' pluginspage='http://www.apple.com/quicktime/download/' src='movies/incomplete_precipitation.mov' autoplay='false' controller='true'></embed></object>";
}

function showPoliceman_mov() {
	document.getElementById("gravimetric_policeman_mov").innerHTML = "<object classid='clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B' height='196' width='240' codebase='http://www.apple.com/qtactivex/qtplugin.cab'><param name='src' value='movies/rubber_policeman.mov'><param name='autoplay' value='false'><param name='controller' value='true'><embed height='196' width='240' type='video/quicktime' pluginspage='http://www.apple.com/quicktime/download/' src='movies/rubber_policeman.mov' autoplay='false' controller='true'></embed></object>";
}


////////////////////// NMR SPECTRA TEST ////////////////////////

function showSpectra1() {
	document.getElementById("stageSpectra").innerHTML = "<img src='../../images/spectra1.gif' width='1000' height='763' alt='spectra' usemap='#map_spectra'><map name='map_spectra'><area href='javascript:void(0)' onmousedown='showSpectra2()' alt='spectra2' shape='rect' coords='475,380,510,660'><area href='javascript:void(0)' onmousedown='showSpectra3()' alt='spectra3' shape='rect' coords='405,440,425,660'></map>";
}

function showSpectra2() {
	document.getElementById("stageSpectra").innerHTML = "<img src='../../images/spectra2.gif' width='1000' height='763' alt='spectra'><p><a href='javascript:void(0)' onmousedown='showSpectra1()'>&larr;back</a></p>";
}

function showSpectra3() {
	document.getElementById("stageSpectra").innerHTML = "<img src='../../images/spectra3.gif' width='1000' height='763' alt='spectra'><p><a href='javascript:void(0)' onmousedown='showSpectra1()'>&larr;back</a></p>";
}


////////////////////// CHEM LAB RECRYSTALLIZATION SHOW MOVS //////////////////////////////


function showFlute_mov() {
	document.getElementById("flute_mov").innerHTML = "<object classid='clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B' height='243' width='302' codebase='http://www.apple.com/qtactivex/qtplugin.cab'><param name='src' value='movies/flute.mov'><param name='autoplay' value='false'><param name='controller' value='true'><embed height='243' width='302' type='video/quicktime' pluginspage='http://www.apple.com/quicktime/download/' src='movies/flute.mov' autoplay='false' controller='true'></embed></object>";
}


///////////////////// CHEM LAB SYNTHESIS SAMPLES //////////////////////////


function showSample_tin() {
	document.getElementById("sample_tin").style.display = "block";
}

function showSample_alum() {
	document.getElementById("sample_alum").style.display = "block";
}

function showSample_copper() {
	document.getElementById("sample_copper").style.display = "block";
}

function showSample_iodide() {
	document.getElementById("sample_iodide").style.display = "block";
}

function showSample_libethenite() {
	document.getElementById("sample_libethenite").style.display = "block";
}


/////////////////// IONIC NOMENCLATURE ROLLOVERS //////////////////////////


function po4_over() {
	document.getElementById("po4_answer").style.visibility = "visible";
}

function po4_out() {
	document.getElementById("po4_answer").style.visibility = "hidden";
}

function no3_over() {
	document.getElementById("no3_answer").style.visibility = "visible";
}

function no3_out() {
	document.getElementById("no3_answer").style.visibility = "hidden";
}

function no2_over() {
	document.getElementById("no2_answer").style.visibility = "visible";
}

function no2_out() {
	document.getElementById("no2_answer").style.visibility = "hidden";
}

function cn_over() {
	document.getElementById("cn_answer").style.visibility = "visible";
}

function cn_out() {
	document.getElementById("cn_answer").style.visibility = "hidden";
}

function clo4_over() {
	document.getElementById("clo4_answer").style.visibility = "visible";
}

function clo4_out() {
	document.getElementById("clo4_answer").style.visibility = "hidden";
}

function co3_over() {
	document.getElementById("co3_answer").style.visibility = "visible";
}

function co3_out() {
	document.getElementById("co3_answer").style.visibility = "hidden";
}

function oh_over() {
	document.getElementById("oh_answer").style.visibility = "visible";
}

function oh_out() {
	document.getElementById("oh_answer").style.visibility = "hidden";
}

function mno4_over() {
	document.getElementById("mno4_answer").style.visibility = "visible";
}

function mno4_out() {
	document.getElementById("mno4_answer").style.visibility = "hidden";
}

function hf_over() {
	document.getElementById("hf_answer").style.visibility = "visible";
}

function hf_out() {
	document.getElementById("hf_answer").style.visibility = "hidden";
}

function hno3_over() {
	document.getElementById("hno3_answer").style.visibility = "visible";
}

function hno3_out() {
	document.getElementById("hno3_answer").style.visibility = "hidden";
}

function hso3_over() {
	document.getElementById("hso3_answer").style.visibility = "visible";
}

function hso3_out() {
	document.getElementById("hso3_answer").style.visibility = "hidden";
}

function al3_over() {
	document.getElementById("al3_answer").style.visibility = "visible";
}

function al3_out() {
	document.getElementById("al3_answer").style.visibility = "hidden";
}

function fe_over() {
	document.getElementById("fe_answer").style.visibility = "visible";
}

function fe_out() {
	document.getElementById("fe_answer").style.visibility = "hidden";
}

function h3po4_over() {
	document.getElementById("h3po4_answer").style.visibility = "visible";
}

function h3po4_out() {
	document.getElementById("h3po4_answer").style.visibility = "hidden";
}

function cu_over() {
	document.getElementById("cu_answer").style.visibility = "visible";
}

function cu_out() {
	document.getElementById("cu_answer").style.visibility = "hidden";
}

function so3_over() {
	document.getElementById("so3_answer").style.visibility = "visible";
}

function so3_out() {
	document.getElementById("so3_answer").style.visibility = "hidden";
}

function au_over() {
	document.getElementById("au_answer").style.visibility = "visible";
}

function au_out() {
	document.getElementById("au_answer").style.visibility = "hidden";
}

function hclo2_over() {
	document.getElementById("hclo2_answer").style.visibility = "visible";
}

function hclo2_out() {
	document.getElementById("hclo2_answer").style.visibility = "hidden";
}

function hc2h3o2_over() {
	document.getElementById("hc2h3o2_answer").style.visibility = "visible";
}

function hc2h3o2_out() {
	document.getElementById("hc2h3o2_answer").style.visibility = "hidden";
}

function c2o4_over() {
	document.getElementById("c2o4_answer").style.visibility = "visible";
}

function c2o4_out() {
	document.getElementById("c2o4_answer").style.visibility = "hidden";
}

function hpo4_over() {
	document.getElementById("hpo4_answer").style.visibility = "visible";
}

function hpo4_out() {
	document.getElementById("hpo4_answer").style.visibility = "hidden";
}

function o_over() {
	document.getElementById("o_answer").style.visibility = "visible";
}

function o_out() {
	document.getElementById("o_answer").style.visibility = "hidden";
}

function cr_over() {
	document.getElementById("cr_answer").style.visibility = "visible";
}

function cr_out() {
	document.getElementById("cr_answer").style.visibility = "hidden";
}

function hco3_over() {
	document.getElementById("hco3_answer").style.visibility = "visible";
}

function hco3_out() {
	document.getElementById("hco3_answer").style.visibility = "hidden";
}

function br_over() {
	document.getElementById("br_answer").style.visibility = "visible";
}

function br_out() {
	document.getElementById("br_answer").style.visibility = "hidden";
}

function pb_over() {
	document.getElementById("pb_answer").style.visibility = "visible";
}

function pb_out() {
	document.getElementById("pb_answer").style.visibility = "hidden";
}

function hclo4_over() {
	document.getElementById("hclo4_answer").style.visibility = "visible";
}

function hclo4_out() {
	document.getElementById("hclo4_answer").style.visibility = "hidden";
}

function c2h3o2_over() {
	document.getElementById("c2h3o2_answer").style.visibility = "visible";
}

function c2h3o2_out() {
	document.getElementById("c2h3o2_answer").style.visibility = "hidden";
}

function n_over() {
	document.getElementById("n_answer").style.visibility = "visible";
}

function n_out() {
	document.getElementById("n_answer").style.visibility = "hidden";
}

function h2c2o4_over() {
	document.getElementById("h2c2o4_answer").style.visibility = "visible";
}

function h2c2o4_out() {
	document.getElementById("h2c2o4_answer").style.visibility = "hidden";
}

function cuprous_over() {
	document.getElementById("cuprous_answer").style.visibility = "visible";
}

function cuprous_out() {
	document.getElementById("cuprous_answer").style.visibility = "hidden";
}

function hno2_over() {
	document.getElementById("hno2_answer").style.visibility = "visible";
}

function hno2_out() {
	document.getElementById("hno2_answer").style.visibility = "hidden";
}

function sn_over() {
	document.getElementById("sn_answer").style.visibility = "visible";
}

function sn_out() {
	document.getElementById("sn_answer").style.visibility = "hidden";
}

function clo_over() {
	document.getElementById("clo_answer").style.visibility = "visible";
}

function clo_out() {
	document.getElementById("clo_answer").style.visibility = "hidden";
}

function chromic_over() {
	document.getElementById("chromic_answer").style.visibility = "visible";
}

function chromic_out() {
	document.getElementById("chromic_answer").style.visibility = "hidden";
}

function hbr_over() {
	document.getElementById("hbr_answer").style.visibility = "visible";
}

function hbr_out() {
	document.getElementById("hbr_answer").style.visibility = "hidden";
}

function hg_over() {
	document.getElementById("hg_answer").style.visibility = "visible";
}

function hg_out() {
	document.getElementById("hg_answer").style.visibility = "hidden";
}

function hi_over() {
	document.getElementById("hi_answer").style.visibility = "visible";
}

function hi_out() {
	document.getElementById("hi_answer").style.visibility = "hidden";
}

function mn_over() {
	document.getElementById("mn_answer").style.visibility = "visible";
}

function mn_out() {
	document.getElementById("mn_answer").style.visibility = "hidden";
}

function hcn_over() {
	document.getElementById("hcn_answer").style.visibility = "visible";
}

function hcn_out() {
	document.getElementById("hcn_answer").style.visibility = "hidden";
}

function cl_over() {
	document.getElementById("cl_answer").style.visibility = "visible";
}

function cl_out() {
	document.getElementById("cl_answer").style.visibility = "hidden";
}

function clo3_over() {
	document.getElementById("clo3_answer").style.visibility = "visible";
}

function clo3_out() {
	document.getElementById("clo3_answer").style.visibility = "hidden";
}

function h2so4_over() {
	document.getElementById("h2so4_answer").style.visibility = "visible";
}

function h2so4_out() {
	document.getElementById("h2so4_answer").style.visibility = "hidden";
}

function cd_over() {
	document.getElementById("cd_answer").style.visibility = "visible";
}

function cd_out() {
	document.getElementById("cd_answer").style.visibility = "hidden";
}

function h2po4_over() {
	document.getElementById("h2po4_answer").style.visibility = "visible";
}

function h2po4_out() {
	document.getElementById("h2po4_answer").style.visibility = "hidden";
}

function hs_over() {
	document.getElementById("hs_answer").style.visibility = "visible";
}

function hs_out() {
	document.getElementById("hs_answer").style.visibility = "hidden";
}

function hmno4_over() {
	document.getElementById("hmno4_answer").style.visibility = "visible";
}

function hmno4_out() {
	document.getElementById("hmno4_answer").style.visibility = "hidden";
}

function hc2o4_over() {
	document.getElementById("hc2o4_answer").style.visibility = "visible";
}

function hc2o4_out() {
	document.getElementById("hc2o4_answer").style.visibility = "hidden";
}

function co_over() {
	document.getElementById("co_answer").style.visibility = "visible";
}

function co_out() {
	document.getElementById("co_answer").style.visibility = "hidden";
}

function zn_over() {
	document.getElementById("zn_answer").style.visibility = "visible";
}

function zn_out() {
	document.getElementById("zn_answer").style.visibility = "hidden";
}

function so4_over() {
	document.getElementById("so4_answer").style.visibility = "visible";
}

function so4_out() {
	document.getElementById("so4_answer").style.visibility = "hidden";
}

function hclo3_over() {
	document.getElementById("hclo3_answer").style.visibility = "visible";
}

function hclo3_out() {
	document.getElementById("hclo3_answer").style.visibility = "hidden";
}

function h_over() {
	document.getElementById("h_answer").style.visibility = "visible";
}

function h_out() {
	document.getElementById("h_answer").style.visibility = "hidden";
}

function s_over() {
	document.getElementById("s_answer").style.visibility = "visible";
}

function s_out() {
	document.getElementById("s_answer").style.visibility = "hidden";
}

function hclo_over() {
	document.getElementById("hclo_answer").style.visibility = "visible";
}

function hclo_out() {
	document.getElementById("hclo_answer").style.visibility = "hidden";
}

function au_over() {
	document.getElementById("au_answer").style.visibility = "visible";
}

function au_out() {
	document.getElementById("au_answer").style.visibility = "hidden";
}

function hcl_over() {
	document.getElementById("hcl_answer").style.visibility = "visible";
}

function hcl_out() {
	document.getElementById("hcl_answer").style.visibility = "hidden";
}

function h2so3_over() {
	document.getElementById("h2so3_answer").style.visibility = "visible";
}

function h2so3_out() {
	document.getElementById("h2so3_answer").style.visibility = "hidden";
}

function h2s_over() {
	document.getElementById("h2s_answer").style.visibility = "visible";
}

function h2s_out() {
	document.getElementById("h2s_answer").style.visibility = "hidden";
}

function ni_over() {
	document.getElementById("ni_answer").style.visibility = "visible";
}

function ni_out() {
	document.getElementById("ni_answer").style.visibility = "hidden";
}

function ag_over() {
	document.getElementById("ag_answer").style.visibility = "visible";
}

function ag_out() {
	document.getElementById("ag_answer").style.visibility = "hidden";
}

function mercuric_over() {
	document.getElementById("mercuric_answer").style.visibility = "visible";
}

function mercuric_out() {
	document.getElementById("mercuric_answer").style.visibility = "hidden";
}

function f_over() {
	document.getElementById("f_answer").style.visibility = "visible";
}

function f_out() {
	document.getElementById("f_answer").style.visibility = "hidden";
}

function cobaltous_over() {
	document.getElementById("cobaltous_answer").style.visibility = "visible";
}

function cobaltous_out() {
	document.getElementById("cobaltous_answer").style.visibility = "hidden";
}

function ferric_over() {
	document.getElementById("ferric_answer").style.visibility = "visible";
}

function ferric_out() {
	document.getElementById("ferric_answer").style.visibility = "hidden";
}

function chlorite_over() {
	document.getElementById("chlorite_answer").style.visibility = "visible";
}

function chlorite_out() {
	document.getElementById("chlorite_answer").style.visibility = "hidden";
}

function h2co3_over() {
	document.getElementById("h2co3_answer").style.visibility = "visible";
}

function h2co3_out() {
	document.getElementById("h2co3_answer").style.visibility = "hidden";
}

function i_over() {
	document.getElementById("i_answer").style.visibility = "visible";
}

function i_out() {
	document.getElementById("i_answer").style.visibility = "hidden";
}

function hso4_over() {
	document.getElementById("hso4_answer").style.visibility = "visible";
}

function hso4_out() {
	document.getElementById("hso4_answer").style.visibility = "hidden";
}


/////////////////// ORGANIC NOMENCLATURE ROLLOVERS //////////////////////////


function orgNom_rollover1_1a_over() {
	document.getElementById("orgNom_rollover1_1answer").innerHTML = "Incorrect<br>Choose the longest C chain.";
}

function orgNom_rollover1_1a_out() {
	document.getElementById("orgNom_rollover1_1answer").innerHTML = "&nbsp;";
}

function orgNom_rollover1_1b_over() {
	document.getElementById("orgNom_rollover1_1answer").innerHTML = "Correct";
}

function orgNom_rollover1_1b_out() {
	document.getElementById("orgNom_rollover1_1answer").innerHTML = "&nbsp;";
}

function orgNom_rollover1_2a_over() {
	document.getElementById("orgNom_rollover1_2answer").innerHTML = "Incorrect<br>Each substituent must have a number.";
}

function orgNom_rollover1_2a_out() {
	document.getElementById("orgNom_rollover1_2answer").innerHTML = "&nbsp;";
}

function orgNom_rollover1_2b_over() {
	document.getElementById("orgNom_rollover1_2answer").innerHTML = "Correct";
}

function orgNom_rollover1_2b_out() {
	document.getElementById("orgNom_rollover1_2answer").innerHTML = "&nbsp;";
}

function orgNom_rollover1_3a_over() {
	document.getElementById("orgNom_rollover1_3answer").innerHTML = "Correct";
}

function orgNom_rollover1_3a_out() {
	document.getElementById("orgNom_rollover1_3answer").innerHTML = "&nbsp;";
}

function orgNom_rollover1_3b_over() {
	document.getElementById("orgNom_rollover1_3answer").innerHTML = "Incorrect<br>Minimize the numbers.";
}

function orgNom_rollover1_3b_out() {
	document.getElementById("orgNom_rollover1_3answer").innerHTML = "&nbsp;";
}

function orgNom_rollover2_1_over() {
	document.getElementById("orgNom_rollover2_1answer").style.visibility = "visible";
}

function orgNom_rollover2_1_out() {
	document.getElementById("orgNom_rollover2_1answer").style.visibility = "hidden";
}

function orgNom_rollover2_2_over() {
	document.getElementById("orgNom_rollover2_2answer").style.visibility = "visible";
}

function orgNom_rollover2_2_out() {
	document.getElementById("orgNom_rollover2_2answer").style.visibility = "hidden";
}

function orgNom_rollover2_3_over() {
	document.getElementById("orgNom_rollover2_3answer").style.visibility = "visible";
}

function orgNom_rollover2_3_out() {
	document.getElementById("orgNom_rollover2_3answer").style.visibility = "hidden";
}

function orgNom_rollover3_1_over() {
	document.getElementById("orgNom_rollover3_1answer").style.visibility = "visible";
}

function orgNom_rollover3_1_out() {
	document.getElementById("orgNom_rollover3_1answer").style.visibility = "hidden";
}

function orgNom_rollover3_2_over() {
	document.getElementById("orgNom_rollover3_2answer").style.visibility = "visible";
}

function orgNom_rollover3_2_out() {
	document.getElementById("orgNom_rollover3_2answer").style.visibility = "hidden";
}

function orgNom_rollover3_3_over() {
	document.getElementById("orgNom_rollover3_3answer").style.visibility = "visible";
}

function orgNom_rollover3_3_out() {
	document.getElementById("orgNom_rollover3_3answer").style.visibility = "hidden";
}

function orgNom_rollover4_1_over() {
	document.getElementById("orgNom_rollover4_1answer").style.visibility = "visible";
}

function orgNom_rollover4_1_out() {
	document.getElementById("orgNom_rollover4_1answer").style.visibility = "hidden";
}

function orgNom_rollover4_2_over() {
	document.getElementById("orgNom_rollover4_2answer").style.visibility = "visible";
}

function orgNom_rollover4_2_out() {
	document.getElementById("orgNom_rollover4_2answer").style.visibility = "hidden";
}

function orgNom_rollover4_3_over() {
	document.getElementById("orgNom_rollover4_3answer").style.visibility = "visible";
}

function orgNom_rollover4_3_out() {
	document.getElementById("orgNom_rollover4_3answer").style.visibility = "hidden";
}

function orgNom_rollover5_1_over() {
	document.getElementById("orgNom_rollover5_1answer").style.visibility = "visible";
}

function orgNom_rollover5_1_out() {
	document.getElementById("orgNom_rollover5_1answer").style.visibility = "hidden";
}

function orgNom_rollover5_2_over() {
	document.getElementById("orgNom_rollover5_2answer").style.visibility = "visible";
}

function orgNom_rollover5_2_out() {
	document.getElementById("orgNom_rollover5_2answer").style.visibility = "hidden";
}

function orgNom_rollover5_3a_over() {
	document.getElementById("orgNom_rollover5_3a_answer").style.visibility = "visible";
}

function orgNom_rollover5_3a_out() {
	document.getElementById("orgNom_rollover5_3a_answer").style.visibility = "hidden";
}

function orgNom_rollover5_3b_over() {
	document.getElementById("orgNom_rollover5_3b_answer").style.visibility = "visible";
}

function orgNom_rollover5_3b_out() {
	document.getElementById("orgNom_rollover5_3b_answer").style.visibility = "hidden";
}

function orgNom_rollover5_3c_over() {
	document.getElementById("orgNom_rollover5_3c_answer").style.visibility = "visible";
}

function orgNom_rollover5_3c_out() {
	document.getElementById("orgNom_rollover5_3c_answer").style.visibility = "hidden";
}


////////////////////// ANIM POINT GROUP PROCEDURE ///////////////////////////////


function procedure_pg1down() {
	document.getElementById("procedure_pg_step2").style.display = "block";
}

function procedure_pg2down() {
	document.getElementById("procedure_pg_step3").style.display = "block";
}

function procedure_pg3down() {
	document.getElementById("procedure_pg_step4").style.display = "block";
}


-->