June 2009 - Chemistry

<p>okay, just to clarify, i am 99% positive this was the CO2 ttce question:</p>

<p>“CO2 contributes to the greenhouse effect”</p>

<p>BECAUSE</p>

<p>“CO2 reacts with water to produce acid rain”</p>

<p>To “I took the SAT” I was unclear on what that question was also- I’m nervous because if it was the acid rain I might have mistakenly put false thinking acid rain is always sulfur dioxide. If it was, however, “makes acid with water,” then I’m probably okay because I would have known that was true.</p>

<p>it did not say acid rain it just acid. and yes it forms an acid</p>

<p>for adidas question, yes i got 0.005 which was E</p>

<p>im almost positiveeeeeeeeeeeeeeeeeeeeee it said acid rain</p>

<p>DAM CHEMISTRY</p>

<p>There was an acid rain question that had to do with limestone-- are you certain you aren’t confusing them? (That’s why I can’t remember the question clearly, I keep mixing those two up)</p>

<p>there were two questions…</p>

<p>1) Acid rain is added to limestone—neutralizaton
2) CO2 produces greenhouse gas and CO2 and water combine to form an acid—TT</p>

<p>Yeah- I agree with the previous poster, I think they were two separate questions</p>

<p>yettiddqq8, I’m pretty sure it said that the two combine to form acid RAIN, which is false. CO2 does react with water to form naturally acidic rain, but it’s not what one would consider acid rain. T/F</p>

<p>^I am 100% positive that it said acid and NOT acid rain.</p>

<p>If only we could see that test right now…=(</p>

<p>I’m rather sure that it said acid rain so who knows.</p>

<p>What about the question about Al and Cl and the XY thing…
Sorry if this is vague but the answers were
XY2
X2Y
XY
X2Y3 which is what I guessed on …</p>

<p>And if anyone has some helpful advice. I just took the test and I ran out of time to leave 9 blank answers. looking througjh this test, i think I got relatively most of them right… i honestly think I could do better if I don’t waste time but I’m not sure if I should cancel them (I took ushistory also)… I don’t want a bad record even if I take it again but I’m not sure if thats significant. thanks</p>

<p>I’m pretty sure it was AlCl3, so XY3.</p>

<p>In the second set of questions in the beginning, the formation of CO2 is combustion, right?</p>

<p>And yeah, it’s AlCl3. </p>

<p>I also am pretty sure it was just acidic solution, not acid rain, because I remember writing h2CO3 because I write what I’m thinking.</p>

<p>What was the answer to the one for determining the approx pH, chromotography paper (whatever that is) or litmus paper?</p>

<p>litmus, is paper that changes color in different pH (from red to blue)
chromatography separates mixtures
(though really, google is your friend)</p>

<p>sorry i mean chromatography or indicator</p>

<p>Hey. Umm. I was just wondering. What does a raw score of 60, 65, and 70 translate to? (Approximately)</p>

<p>And what would be 11 wrong and 7 omits?</p>

<p>What was the answer to the very last TTCE question where it asked about Carbon Dioxide and said
Carbon Dioxide is not polar even though it has two polar bonds bcs. the two polar bonds cancel each other out
I put TTCE but i was confused because, doesn’t carbon dioxide have 4 polar bonds not two? ::0=C=0::</p>

<p>Well, a double bond is still essentially just one bond.</p>