<p>I skipped that question. I hate calculating decimals w/o calculators...</p>
<p>yeah, there was some pretty easy rounding you could do to quickly reduce fractions. a lot of them were like approximately 1/250 and the 7.5 +/- .2 came out to 1/35. so it was definitely 7.5ml +/- .2</p>
<p>is it possible to do all the questions in only an hour? it seems hard cuz of heavy calculations that slow u down</p>
<p>Does any1 remember if they got 3 FT in a row around 109-113?</p>
<p>There was a question about which forms an acidic solution when placed in water. The options were SO2, Na (which, being an idiot, I chose), and some others. Does anybody know the right answer to that one?</p>
<p>i think i got 4. most likely im wrong.</p>
<p>Do you guys wana just do a chat room on AIM? it seems like it'd be easier w/out having to wait</p>
<p>yeah it is.. no, the calculations aren't that bad.. they're only in like 8-10 questions.. the others are easy except those annoying balancing equations questions.... they take WAY more time than the problem solving ones.</p>
<p>begoner, it's so2, na will make a base in water. (NaOH)</p>
<p>I believe the equation for that one was P2O5 + 3H2O --> 2H3PO4.</p>
<p>Collegefreak it was 1</p>
<p>P4O10 + 6H2O --------> 4H3PO4</p>
<p>thank god they asked for the P4O10 coefficient or else i would have been screwed</p>
<p>The answer was SO2 because it is the thing in Acid Rain. It make H2SO3 or H2SO4 i think</p>
<p>yea that one was weird. to be an acid, doenst it need to donate H+ protons?</p>
<p>begoner, i said SO2, i guess it might for sulfuric acid in water??maybe??</p>
<p>the phosphorus problem was like P205 + H20 yields phosphoric acid.</p>
<p>SO2 is correct. Makes H2SO3</p>
<p>Hey guys do you think the problem with KCL is referring to a supersaturated solution?</p>
<p>Well, my reasoning was that Na was the conjugate acid of NaOH, so it would lead to an acidic solution. Of course, that's wrong because NaOH is a strong base.</p>
<p>from wikipedia, "Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.[2]"
Sulfur</a> dioxide - Wikipedia, the free encyclopedia</p>
<p>I wasnt sure about the KCL problem because it was an endothermic reaction and it confused me so it skipped it.</p>
<p>Which KCl Problem?</p>