<p>does anyone remember wwhat the second statement for the oxygen/hydrogen KE one was?</p>
<p>and what'd you guys get for the one that talked about a liquid in an insulated vessel that had evaporation. i wasn't sure because of the insulated aspect...does this mean gas/heat cannot escape?</p>
<p>The first statement was hydrogen would have lower average speed and the second statement was it would have lower average kinetic energy. Both were false because the temperature measures average kinetic energy of the molecules and both were the same so they had the same average kinetic energy and velocity is inversely proportional to mass at a constant KE so the lower mass (hydrogen) should have a higher velocity.</p>
<p>I also put F F like Balaylay but don't remember the exact question.
I need more details on the insulated question. I remember doing it but forgot the options and full question..</p>
<p>I'll live... thanks Baylaylay.</p>
<p>ah thanks balaylay. im fairly sure i wrote FF too then.</p>
<p>statement 1: Water is put in an insulated vessel. Some water evaporates. The remaining liquid is cooler</p>
<p>statement 2: the higher kinetic energy particles leave the surface, leaving the remaining particles that have lower average kinetic energy.</p>
<p>If the word insulated was not there, it'd definitely be TTCE. but if it meant that heat and gas could not escape, then temperature of water would be constant because it is merely part of the equilibrium and not a change in kinetic energy.</p>
<p>That one was that in an insulated container the liquid would have a lower temperature after some of it evaporates because the first ones to evaporate have the most kinetic energy so once they leave the kinetic energy of the total will be lower. I put TTCE. The fact that it was insulated just makes sure that no heat comes in from the outside changing the kinetic energy of the molecules so you could focus on only the effect of evaporation.</p>
<p>Insulated just means heat doesn't flow, not necessarily that the gas doesn't escape. So if that's so then it was TTCE. If the gas doesn't escape then you're right and it wouldn't be.</p>
<p>idk cuz when i think insulated vessel, i think closed container...as supported by google images :P</p>
<p>True but these are idealized situations so even though in real life you can't be open and insulated I just assumed since they said insulated but not closed they meant an idealized container that was somehow open yet still insulated LOL. Idk.</p>
<p>I also put T T CE for the evaporated liquid one.</p>
<p>Anyone know why the chem has questions like that? It's the only SAT II that has anything different from some form of the traditional multiple choice as far as I know and it seems kind of weird.</p>
<p>It does suck big time.</p>
<p>How about for the phase change graph. Boiling point was D? What was the critical point?</p>
<p>critical point is where it cant be liquified no matter how high you make the pressure, so it was E.</p>
<p>Holy balls I think I guessed E. Yes!!!!!!!!!</p>
<p>GUH!!! For some reason I thought they were asking for melting point not boiling point. =/</p>
<p>Which has 180 degree bond angle- doesnt Co2 and N2 both have those?
it could only be Fe2 03 (like rust)?<br>
How many grams of aluminum? Either 5.5 or 2.7 or something</p>
<p>Also which has 1 unpaired electron?
If you add what to the equation will equlibrium shift to the left. Choices were like HCL, NaN03, something with Cr?..</p>
<p>uh i put CO2 had the 180 bond angle. i didnt put N2 cuz i figured you need to have a central atom to even make bond angles relevant in the first place.</p>
<p>To above post, it was the one that had the same anion as the one on the left. Cuz that would start to dissolve. and because of the common ion effect then more of the reactant would be produced and the equation would be shifted to the left. Also, 3 of the answer choices would have made it shift to the right and the final one was completely irrelevant in regards to the equation.</p>
<p>The hess law one was the first right? For the 180 I think it was CO2.</p>