<p>so the one towards the end like one of the 45-50 ones where it had balanced equation was not 22.4 L?</p>
<p>ok two things</p>
<p>one of the later t/f/ce about carbon contributing to greenhouse (t) and carbon reacting with water to form an acidic solution(t) that was NOT correlated correct? carbon contributes to the greenhouse because it holds in heat, not because it forms acid rain.</p>
<p>also, according to the 2009 Barrons book a 75-85 is an 800, so you people saying you missed like 3 and dont think you’ll get an 800 are crazy. (I realize that the curve is based on the difficulty of the test, but I dont think it was especially easy)</p>
<p>The Barron’s scale is entirely different, and its practice tests are usually more difficult than CB ones. However, I thought that today’s test was harder than at least 3 of the Barron’s, and I’m worried that the curve will be harsh (i.e. 81/85 = 800) since people seem to think it was easy.</p>
<p>I think I put T/T for the carbon one…</p>
<p>Really? I took a Barron’s practice test yesterday and got a 790, I thought the test today was harder than the Barron’s ones. Also, you have to remember that most people on here are towards the upper end of the people taking the test so just because people on here think it was easy doesnt mean most people did well.</p>
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I put T T CE. CO2 reacts with water to form carbonic acid (acid rain). It is a greenhouse gas and does trap heat, but it is also the cause acid rain.<br>
(I checked my facts with Wikipedia. :D)</p>
<p>I thought that this test was somewhat easier than May’s. It is also much easier than Barrons. </p>
<p>MikeDoesWork, if you legitly got 790 on Barrons, you will get AT LEAST 790 on the real thing unless you screwed up somehow.</p>
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<p>These are both true statements: CO2 does react with water to form H2CO3 and it is a greenhouse gas. However, neither of these are related to one another. I believe the answer is just T,T.</p>
<p>CO2 contributes to the greenhouse effect BECAUSE when dissolved in water it forms an acidic solution.</p>
<p>T T, no CE because the reason why CO2 contributes to the greenhouse effect is because it traps heat, not because it forms acidic solutions with water.</p>
<p>What about the pure carbon diamond question</p>
<p>Carbon and Graphite contain the same structure BECAUSE carbon and graphite are pure forms of carbon</p>
<p>T T</p>
<p>I was kind of peeved that there was no electrochemistry on there. I spent forever studying electrolytic/voltaic cells.</p>
<p>diamond and graphite arent the same structure. diamond is sp3, graphite is sp2</p>
<p>Sorry I meant F T</p>
<p>^Seconded. So for the diamond/graphite question it’s FT.</p>
<p>I’m actually really happy there wasn’t anything about electrolytic/voltaic cells. I basically gave up during that unit in chem class.</p>
<p>electrolytic and voltaic cells werent that bad. the worst chapter in ap was buffers</p>
<p>[Global</a> Warming Guilt: Methane Or Carbonic Acid Gas?](<a href=“http://www.scientificblogging.com/news/global_warming_guilt_methane_or_carbonic_acid_gas]Global”>Global Warming Guilt: Methane Or Carbonic Acid Gas? | Science 2.0)
They seem to think carbonic acid has to do with global warming. </p>
<p>It does seem that the general consensus is TT. 
Oh well, I’m still within range for an 800. Hopefully…</p>
<p>so for the carbon reacting with oxygen the correct answer is oxidation right? (if it was combustion then, 1) it would have to be a hydrocarbon 2) co2 and h20 would be produced)</p>
<p>does anyone remember the exact I II III. question about the electrons, (what were the choices other than electron weighs 1/3 of an atom and that it is released during nuclear decay)</p>
<p>I think I got that one wrong : (</p>
<p>Also… There was a question where they gave you the atomic numbers one number was for aluminum and the other was for either a halogen or a 6A element? What did you guys get
X2Y3 or XY3</p>
<p>somebody said it was xy3 but im pretty sure i put down x2y3</p>
<p>The Fed, answer’s xy3 (AlCl3)</p>
<p>I think the electrons question was I and II.</p>
<p>Do you guys think that today’s test will follow the Blue Book curve, more or less?</p>
<p>CO2 contributes to the greenhouse effect BECAUSE when dissolved in water it forms an acidic solution.</p>
<p>You people keep saying it’s TT, but are you sure that was the question? Because I swear that it said acid rain, and not an acidic solution - and H2CO3 is NOT considered acid rain. It is simply considered naturally acidic rain.</p>