<p>yeah it was CO2</p>
<p>its CO2</p>
<p>also, what was the answer to the least dangerous gas to humans? was it CO2?</p>
<p>CO2 we do not count one with two molecules only</p>
<p>can we get a consolidated list going? It’s the only way i’ll go to sleep tonight haha</p>
<p>can anyone answer my question??? it was the only one I was not sure about!!!1ei op2hjrp3hjqrq3pjrop</p>
<p>yeah it was CO2. it cant be harmful if we breath it out…</p>
<p>which one are you not sure about wong tong tong?</p>
<p>For the question on isomers with the double bonds, none of them are isomers. Double bond isomers are different from single bond isomers. They’re called stereoisomers.</p>
<p>Today’s SAT II chemistry was hard… I missed the distillation/paper chromatography/filtration ones I think. I don’t remember if I read the highest/lowest pH right, and I don’t think I got the one between Tin and Zinc as the most oxidation states right.</p>
<p>i believe i got all of Part A right, save a few (the bohr thing). part C was a fiasco and I got some silly things on Part B incorrect.</p>
<p>@hife
“There was a precipitation reaction, a decomposition reaction, and a Redox Reaction”</p>
<p>I don’t remember a precipitation reaction, but I do recall putting decomposition, redox, and another one.</p>
<p>For last part of part A,</p>
<p>Why are the answers not A-E-A?</p>
<p>I believe 1 and 2 were isomers, they contained a double bond between the Carbon atoms and there were 2 Hydrogens and 2 Chlorines bonded to the Carbons.</p>
<p>@nycdave</p>
<p>I and II were both double bonds. The isomers for double bonds are different than that of single bonds.</p>
<p>EDIT: Here’s why:
[url=<a href=“http://www.cem.msu.edu/~reusch/VirtualText/sterisom.htm]Stereoisomers[/url”>http://www.cem.msu.edu/~reusch/VirtualText/sterisom.htm]Stereoisomers[/url</a>]</p>
<p>As for the Mendeleev one, it said overall electrons, not valence electrons, so it should be [F][T].</p>
<p>dudu611 yea that’s what I thought too after reading the 2nd part of the T/F question. I noticed that it mentioned the ELECTRONS instead of valence(at first I put True for him predicting the physical properties of Gallium), so I was thinking, how could mendeleev ever predict the PHYSICAL properties of any substance (different from chemical property)? Then I changed my answer to False…</p>
<p>kk414kk, </p>
<p>Which question was about the tin and zinc oxidation states that you mentioned?</p>
<p>omg… who here also thinks this test was very tricky ? =[</p>
<p>i did. does collegeboard announce there scoring scale prior to the score release?</p>
<p>@dwarf</p>
<p>It was the one that gave you electron configurations and the question asked which one is a transition metal with the most oxidation states.</p>
<p>This test was hard…</p>
<p>I remember I got kinda confused on that question…but I noticed that the question asked for a transition metal, and only 1 of the configs was a transition metal, the others ended with s or p but 1 had 3d10 and the one that I chose was like 3d24s(?) I forgot…could you even have only 2 e- in the 3d but still fill out the 4s??? I’m confused can you help me jog my memory on that question</p>