<p>I thought it was ok, though i think it's presently impossible to predict how well i did. I just hope I got above a 750.</p>
<p>with the question-</p>
<p>Which of the following is produced by the following reaction</p>
<p>CS + O2 --> </p>
<p>was SO2 produced? I put a) only I which was CO2</p>
<p>i put A) only CO2 also, it was a combustion reaction = h20 and co2</p>
<p>Wow I suck at chem. Really hoping for a 750</p>
<p>It was both CO2 and SO2. The chemical equation, if done experimentally, is CS2(l) + 3 O2(g) --> CO2(g) + 2 SO2(g).</p>
<p>good luck!</p>
<p>i think you can drop 12 questions and still get 750 :)</p>
<p>ETA: gah! i didn't know, i assumed it was combustion for (H2O and CO2) but i guess it's just oxidation? i didn't know the forumla. thanks for the response, (sadly that's one gone) pour moi</p>
<p>Thanks! Hope everyone did fine on their test</p>
<p>I remember getting CO2 and SO2, but that was just a wild guess really.</p>
<p>thanks rewind, good job! wikipedia confirmed your answer :)</p>
<p>CS2 + 3O2 → CO2 + 2SO2</p>
<p>damnt, o well i too assumed combustion! i suck!</p>
<p>i just really really hope i don't screw (much) anything else up :(</p>
<p>ANyone know what the T,T,CE answers are for the "heating a hydrated" question and the "level of water" question?</p>
<p>i said CE for the water question, i'm pretty sure it's right. and i also said CE for heating a hydrate, which i am confident about as well.</p>
<p>^ Same for both.</p>
<p>Ah crap, I put F, T for the water level one because the first one said "To find the volume at 1 atm, the water level in the inside and out should be equal" and I was thinking it should have said something about subtracting the water vapor pressure.</p>
<p>for the ones about the buret, the middle one was that thing without measurements on it because it said you wanted to dilute it to a certain volume. so the measurements would only be necessary on the thing youre putting anything in. the other two were burets.</p>
<p>and the last TTCE question thing was F, T, since if youre trying to find the pressure at 1 atm, then if the pressure inside isnt 1 atm then obviously the water level inside wont be the same as the one outside.</p>
<p>Well your trying to find the volume not pressure, but still I agree with you because if you were trying to find the EXACT air volume, the water level inside would be a little lower than the level outside.</p>
<p>oh, it was volume? wth -__- ok then it was definitely TTCE.</p>
<p>darn it</p>
<p>there definitely were not 2 burets..... u use the flask thing to dilute solutions.... why else do u find them in those bottles????</p>
<p>and isn't the graph concentration thing 40 seconds cuz of the equation??? (X -> 2Y)</p>
<p>oh and was the Keq for the graph question something like .012^2/.004??? (Y^2/X)</p>
<p>idk, how can you measure an exact dilution when you have a flask thing with no graduations or anything? I put burette for all of them because they all asked for accurate solutions, and a burette is the most accurate dispenser.</p>
<p>Oh, the upside-down flask thing is a seperatory funnel, which is used to seperate solutions, so that can't be any of them. The burette is used for transfers and titrations so I think that's the first and third answer. Flasks are used for dilutions, but it only holds the solution and a seperate structure is used to actually transfer the water, which could be either a graduatec cylinder or a burette. Burettes are more accurate, but idk.</p>