// JavaScript Document
thepage="More Comparisons"
//11/18/02-netscape 7
refnumber=12
//globals
qtype=0
ctype=0
first=0
second=0
look=0
totl=0
corrt=0
tried=0
choice=0
moles=new Array(5)
mass=new Array(5)
volume=new Array(5)
firstelement=""
secondelement=""
qstring="";fstring="";sstring=""
fsolstring="";ssolstring="";
firstdot="<form><input type=radio name=which onClick=answer(1)>Correct"
seconddot="<input type=radio name=which onClick=answer(2)>Incorrect</form>"
samething=new Array(5)
compare=new Array(5)
compare[1]="greater "
compare[2]="lesser "
lookfor=new Array(3)
lookfor[1]="number of moles"
lookfor[2]="mass"
lookfor[3]="volume"
finish=new Array(5)
finish[1]="Correct"
finish[2]="Incorrect"
function atom(name,sym,mass,density,mv){
	this.name=name
	this.sym=sym
	this.mass=mass
	this.density=density
	this.mv=1
}
function ask(p1,p2,p3,p4,p5,p6){
	this.p1=p1
	this.p2=p2
	this.p3=p3
	this.p4=p4
	this.p5=p5
	this.p6=p6
}
question=new ask("A ", " sample of "," will have a "," than a "," sample of ",".")
a=new Array(100)
a[1]=new atom("lithium","Li",6.941,.53)
a[2]=new atom("beryllium","Be",9.01218,1.85)
a[3]=new atom("boron","B",10.811,2.34)
a[4]=new atom("carbon","C",12.011,2.26)
a[5]=new atom("bismuth","Bi",208.9804,9.75)
a[6]=new atom("polonium","Po",209,9.3)
a[7]=new atom("gold","Au",196.9665,19.3)
a[8]=new atom("platinum","Pt",195.08,21.45)
a[9]=new atom("sodium","Na",22.98977,.97,24)
a[10]=new atom("magnesium","Mg",24.305,1.74)
a[11]=new atom("aluminum","Al",26.98154,2.70)
a[12]=new atom("silicon","Si",28.086,2.33)
a[13]=new atom("phosphorous","P",30.97376,1.82)
a[14]=new atom("sulfur","S",16,32.066,2.07)
a[15]=new atom("thallium","Tl",204.383,11.85)
a[16]=new atom("lead","Pb",207.2,11.35)
a[17]=new atom("potassium","K",39.098,.86)
a[18]=new atom("calcium","Ca",40.08,1.55)
a[19]=new atom("scandium","Sc",44.9559,2.99)
a[20]=new atom("titanium","Ti",47.88,4.54)
a[21]=new atom("vanadium","V",50.9415,6.11)
a[22]=new atom("chromium","Cr",51.996,7.19)
a[23]=new atom("manganese","Mn",54.9380,7.44)
a[24]=new atom("iron","Fe",55.847,7.87)
a[25]=new atom("cobalt","Co",58.9332,8.90)
a[26]=new atom("nickel","Ni",58.69,8.90)
a[27]=new atom("copper","Cu",63.546,8.96)
a[28]=new atom("zinc","Zn",65.39,7.13)
a[29]=new atom("gallium","Ga",69.723,5.91)
a[30]=new atom("germanium","Ge",72.61,5.32)
a[31]=new atom("arsenic","As",74.9216,5.76)
a[32]=new atom("selenium","Se",78.98,4.79)
a[33]=new atom("bromine","Br",79.904,3.12)
a[34]=new atom("osmium","Os",190.2,22.6)
a[35]=new atom("rubidium","Rb",85.4678,1.53)
a[36]=new atom("strontium","Sr",87.62,2.54)
a[37]=new atom("yttrium","Y",88.9059,4.47)
a[38]=new atom("zirconium","Zr",91.224,6.51)
a[39]=new atom("niobium","Nb",92.9064,8.57)
a[40]=new atom("molybdenum","Mo",95.94,10.22)
a[41]=new atom("iridium","Ir",192.22,22.6)
a[42]=new atom("ruthenium","Ru",101.07,12.37)
a[43]=new atom("rhodium","Rh",102.9055,12.41)
a[44]=new atom("palladium","Pd",106.42,12.0)
a[45]=new atom("silver","Ag",107.868,10.50)
a[46]=new atom("cadmium","Cd",112.411,8.65)
a[47]=new atom("indium","In",114.82,7.31)
a[48]=new atom("tin","Sn",118.710,7.31)
a[49]=new atom("antimony","Sb",121.75,6.69)
a[50]=new atom("tellurium","Te",127.60,6.24)
a[51]=new atom("iodine","I",126.9045,4.93)
a[52]=new atom("mercury","Hg",200.59,13.55)
a[53]=new atom("cesium","Cs",132.9054,1.87)
a[54]=new atom("barium","Ba",137.27,3.59)
a[55]=new atom("lanthanum","La",138.9055,6.15)
a[56]=new atom("cerium","Ce",140.115,6.77)
a[57]=new atom("praseodymium","Pr",140.9077,6.77)
a[58]=new atom("neodymium","Nd",144.24,7.01)
a[59]=new atom("promethium","Pm",145,7.22)
a[60]=new atom("samarium","Sm",150.36,7.52)
a[61]=new atom("europium","Eu",151.985,5.24)
a[62]=new atom("gadolinium","Gd",157.25,7.90)
a[63]=new atom("terbium","Tb",158.925,8.23)
a[64]=new atom("dysprosium","Dy",162.50,8.55)
a[65]=new atom("holmium","Ho",164.930,8.80)
a[66]=new atom("erbium","Er",167.26,9.07)
a[67]=new atom("thullum","Tm",168.9342,9.32)
a[68]=new atom("ytterbium","Yb",173.04,6.97)
a[69]=new atom("lutetium","Lu",174.97,9.84)
a[70]=new atom("hafnium","Hf",178.49,13.31)
a[71]=new atom("tantalum","Ta",180.9479,16.65)
a[72]=new atom("tungsten","W",183.85,19.3)
a[73]=new atom("rhenium","Re",186.207,21)
function clear(){
	tried=0
	clearansspot()
	document.forms[0].results.value=""
}
function startit(){
	totl++
	clear()
	document.forms[0].total.value=totl
	first=Math.ceil(73*Math.random())
	second=first
	while(second==first){second=Math.ceil(73*Math.random())}
	if(Math.random()>.5)firstelement=a[first].name;
		else firstelement=a[first].sym;
	if(Math.random()>.5)secondelement=a[second].sym;
		else secondelement=a[second].name;
	properties(1,first)
	properties(2,second)
	setvalues()
	qtype=Math.ceil(3*Math.random())
	ctype=Math.ceil(2*Math.random())
	qstring=""+ctype+qtype
	buildquest()
	getsetup()	
}
function properties(order,which){
	moles[order]=Math.ceil(100*Math.random())/10
	mass[order]=Math.ceil(100*moles[order]*a[which].mass)/100
	volume[order]=Math.ceil(100*mass[order]/a[which].density)/100
}
function setvalues(){
	forfirst=Math.ceil(3*Math.random())
	forsecond=forfirst
	while(forsecond==forfirst)forsecond=Math.ceil(3*Math.random())
	if(forfirst==1)fstring=moles[1] + " mole"
	if(forfirst==2)fstring=mass[1] + "gram"
	if(forfirst==3)fstring=volume[1] + "cm<sup>3</sup>"
	if(forsecond==1)sstring=moles[2] + " mole"
	if(forsecond==2)sstring=mass[2] + "gram"
	if(forsecond==3)sstring=volume[2] + "cm<sup>3</sup>"
	
}
function getsetup(){
	choice=0
	qstring=1*qstring
	if(qstring==11){
		if(moles[1]>moles[2])choice=1;
		else choice=2;
	}
	if(qstring==12){
		if(mass[1]>mass[2])choice=1;
		else choice=2;
	}
	if(qstring==13){
		if(volume[1]>volume[2])choice=1;
		else choice=2;
	}
	if(qstring==21){
		if(moles[1]<moles[2])choice=1;
		else choice=2;
	}
	if(qstring==22){
		if(mass[1]<mass[2])choice=1;
		else choice=2;
	}
	if(qstring==23){
		if(volume[1]<volume[2])choice=1;
		else choice=2;
	}
	buildanswer(choice)
}
ansphrase=new ask("First, convert both samples into the comparison dimension. You should try approximating that first and only do the exact calculation if the approx values don't give a clear result.<br>"," Since the question says that the "," than the ",", you should be able to see that the proper response is ",".")

function buildquest(){
	thequest=question.p1+fstring+question.p2+firstelement+question.p3+compare[ctype]+lookfor[qtype]+question.p4+sstring+question.p5+secondelement+question.p6
	thequest+=(firstdot+seconddot)
showquest(thequest)
}
function buildanswer(choice){
if(qtype==1){
		fsolstring="=>"+moles[1]+"moles"
		ssolstring="=>"+moles[2]+"moles"
	}
	if(qtype==2){
		fsolstring="=>"+mass[1]+"grams"
		ssolstring="=>"+mass[2]+"grams"
	}
	if(qtype==3){
		fsolstring="=>"+volume[1]+"cm<sup>3</sup>"
		ssolstring="=>"+volume[2]+"cm<sup>3</sup>"
	}
theanswer=ansphrase.p1+firstelement+":"+fstring+fsolstring+"<br>"+secondelement+":"+sstring+ssolstring+"<br>"+ansphrase.p2+firstelement+question.p3+compare[ctype]+lookfor[qtype]+ansphrase.p3+secondelement+ansphrase.p4+finish[choice]+ansphrase.p5
}
function answer(submitted){
	if(tried==1){
		alert("You've already done this one! Get a new problem.")
	}
	else{
	if(choice==submitted){
		corrt++
		document.forms[0].correct.value=corrt
		document.forms[0].results.value="correct"
		tried=1
	}
	else {
		document.forms[0].elements[1].value="incorrect"
	}}
	showanswer()
}