<p>Anyone? ..</p>
<p>i agree, True b/c water boils at lower temp. but false b/c presure is lower at higher altitudes.</p>
<p>I got 0.05 on PbI2 or somethig like that... i know i didn't get a 3 in the number though.</p>
<p>omgosh how did you even do the pbi2 one? i spent about 5 minutes on that one. i couldn't balance the equation</p>
<p>pressure is higher at higher altitudes, or else it would boil at a higher temperature</p>
<p>pressure is lower i think because you have less pushing down on you.</p>
<p>no pressure is LOWER at higher altitudes. think of it this way, there is less atmosphere pushing you down. b/c there is less pressure, it would boil at a lower temperature b/c it is doesn't require as much energy to reach the same atmospheric pressure so it can boil.</p>
<p>whatv was the lowest coeffecient for that equation with the CaCO3</p>
<p>what about my pbI2 question? anyone?</p>
<p>btw that was such a good explanation, rose. I wish i knew that before the test though</p>
<p>never mind, you guys are right, my bad</p>
<p>Ok for the pbi2 one</p>
<p>You multiplied the L by M to get m</p>
<p>so you get .1 and .1</p>
<p>However there are 2 I's so i put .03.</p>
<p>lol, it's something like .005. Not .03 though.</p>
<p>"so you get .1 and .1</p>
<p>However there are 2 I's so i put .03."</p>
<p>how'd you get that? </p>
<p>btw, does anyone know how to do the cool "quotes" thing? anyone know what I'm talking about?</p>
<p>I think I remember a 5 in mine also...I was trying to figure out whether it was .05 or .025...I can't remember which one I went with, I think the .025</p>
<p>I think one of the answers to one of the questions was 0.025 or 0.25 or something like that.</p>
<p>=]</p>
<p>There wasnt even a .25 or .025 in this question...
There were .1 .2 .3 .4 .5 (might be .01 etc etc.)</p>
<p>I remember now, it was one of those limiting reagents questions</p>
<p>don't remember molecules, but</p>
<p>1A + 2B -> 1AB2</p>
<p>and then they said if there was 500 mililiter .1 molar solutions mixed together, how much product was formed</p>
<p>it is not .03 because they are additive volumes...therefore the equation is:</p>
<p>moles=MV/(Vtotal)</p>
<p>Omg you guys are doing the WRONG problem. PbI was a precip. You don't divide the volume.</p>
<p>darn, that was the only one I skipped!
The one with vanadium was VO2 right? 'cause that works</p>
<p>no no no for the 0.25 question i was just talking about the answer to ONE RANDOM question on the test.. not hte PbI2 one.</p>