June 2010: Chemistry

<p>what is the curve like on these tests?</p>

<p>GrrRrrRRRrrRRR…spent way too long on the last few questions…AND THEY WERE EASY TOO >:[</p>

<p>i think i should see the discussion and decide whether i wanna cancel this or not…
skip 6 and -3 to -5… phew lil disappointed.</p>

<p>When is the embargo lifted? Have all the US people taken it by now?</p>

<p>Could someone pm me what they mean by the last three? I don’t remember anything hard from the first section…</p>

<p>NO2 or N2O?</p>

<p>NO2 i guess</p>

<p>Embargo has been lifted already…
what was the question for the readily evaporation one? doesn’t really ring a bell</p>

<p>What was the name of that chart?!?! I know the answers were difficult, but somebody has to know the name right?! </p>

<p>Grrr… I better get an 800, I took like, every practice test from every book legally available to study for this, and not once did I see that chart…</p>

<p>what was the NO2 one? the harmful?</p>

<p>im pretty sure that one was, has a high vapor pressure, and didnt the other question ask for the least harmful one?</p>

<p>There was a question that asked for the least harmful gas to humans? I’m pretty sure it was CO2…?</p>

<p>Which chart are you talking about?</p>

<p>when water evaporates does the rest of it become cooler?</p>

<p>density of methanol or whatever the substance was? i put 0.7</p>

<p>i think it was NO2 for the unpaired electron</p>

<p>yea i put CO2 as well, anyone have other questions? pretty sure I aced that thing</p>

<p>What was the one about shifting the equilibrium left? I went through every option, and they all seemed like they would shift it right…</p>

<p>The chart was the energy involved in an electron changing energy levels (like the bohr model of an atom). The least energy was the shortest one, ground state was 1 -> 2, and ionization energy was 1 -> infinite.</p>

<p>For the shifting the equation, I think I put add HCl, if that was an answer choice. Not sure if we’re talking about the same question.</p>

<p>And I’m pretty sure water gets cooler when it evaporates… because the molecules with the high kinetic energy/high temperature are the ones that move into the vapor state… I think?</p>

<p>yea density was .7 and unpaired electron was NO2, and yea it does cool when evaporating</p>

<p>the question was what gas is least harmful to humans <em>in small quantities</em>?</p>

<p>I’m on the west coast and I just finished it. People taking multiple tests will finish in a couple hours. It wasn’t as bad as I was expecting but I left 4 blank. The questions I did get, however, were definitely manageable.</p>