June SAT: Chemistry Post-Test Discussion

<p>@thindust:

[Molecular</a> structure](<a href=“http://en.m.wikipedia.org/wiki/Molecular_structure]Molecular”>Molecular geometry - Wikipedia)</p>

<p>what was the Zinc question</p>

<p>The isomer one I’m pretty sure is TTCE. Isomers have the same chemical formula but different structural formulas, or, molecular structure. Don’t read too much into it.</p>

<p>Water is def. NOT a strong electrolyte–distilled water, as seen in the Baron’s book, cannot conduct anything. It IS a very, very, weak acid, as alluded to earlier. </p>

<p>With volume constant, as the problem stated, density = m/v. With mass constant as well as volume, density would be independent in that case (SOLEY because of the constant volume).</p>

<p>There was a question about Zinc, you had to find the mass or something, does anyone remember the exact question??</p>

<p>I recall the answer of the zinc question to be 65 grams, but could someone confirm? My head is going through a haywire mode, and everything is a bit muddled @_@ I’ve also got finals tomorrow and Tuesday. Gahhhhh</p>

<p>definitely was 65 :P</p>

<p>what? i thought i got 6.5</p>

<p>Does anyone remember the actual Zn question? I know that people are saying 65g was the answer, but I can’t remember the actual question.</p>

<p>idk but i remember getting something like 1/10 of a mole of Zn and then multiplying that by 65 g/mol and getting 6.5 g</p>

<p>What would be a -12 on this test?</p>

<p>760 at minimum, 780 if the curve is really hard</p>

<p>When should we expect to know our results? And how will we get the results - online or through the snail mail?</p>

<p>You will be able to see your results in 3 weeks later on in June online at the College Board website if you have an account there.</p>

<p>Apparently the Official Guide said it would be a 740… o.o</p>

<p>But I guess this test is different?</p>

<p>What is a 76/85?</p>

<p>The zinc question is something like the following. I am not sure if it is Ag though.</p>

<p>Zn + 2 Ag+ -> Zn2+ + 2Ag</p>

<p>How many grams of Zinc is needed to produce 1.2x 10^24 atoms of Ag?</p>

<p>The answer is 1 mole of Zinc, which is 65 grams</p>

<p>Oh god that one. I skipped it.</p>

<p>How do you solve it?</p>

<p>For anyone who took it in May, was this test easier or harder?</p>

<p>Is there a consensus on the question about the number of bonds in propane (CH3CH2CH3)?</p>

<p>10 bonds for the propane question</p>