<p>I did so horrible on this. I have no idea why. I studied so hard for it. I was the best student in honors chemistry last year. I got a 105 on the final! and I just completely bombed the SAT. I feel like such an idiot. </p>
<p>Ugh. -_-;</p>
<p>take AP and then take it again</p>
<p>I can't... college applications are due in January. I'm screwed. Blah.</p>
<p>oh ure a senior...some schools allow scores from the jan 27 test so try then</p>
<p>Yes, density was an option. It said "Its density is less than water". Everything else was a chemical property. Density was the only physical.</p>
<p>how many t t ce?</p>
<p>I got 5 T.T.C.E</p>
<p>i got 4 but i like omited 4 or 5 of the 15. did you get ccl4 as a ce?</p>
<p>i'm pretty positive that it was pressure times temperature with volume constant (PV = nRT) so it's a linear graph.. or (or it might have been volume times temperature with pressure held constant) because I specifically remember thinking how ridiculously easy it was.. although i skipped one of the problems in that set.. haha</p>
<p>I got about 4-5 CEs.. umm
1) the very first one
2) the problem about H2SO4 and sulfur.. was CE
3) .. forgot
4) .. forgot</p>
<p>for last set of problems.. i got 0.010 M and 0.002 or something (it was like 20 percent concentration of 0.01 M.. so .20 x 0.01 = 0.002)</p>
<p>what else...? I'm trying to remember as best as possible.</p>
<p>all of the following increases the entropy EXCEPT
answer: condense vapor</p>
<p>oh yea.. the xH3 and XCl4 and Xsomething is phosphorous</p>
<p>the set of problems that ask for the type of bond
H-H (we all agree it's s-s)
H-Cl (we all agree it's s-p)
C2H6 (i don't agree it's sp^3.. i put p-p because the p orbitals from both carbons are connected)</p>
<p>can someone explain to me why it's sp^3? i thought of AB4 => hybridization sp^3, but how can it be sp^3 - sp^3 when they both share each other's carbon.. and it's not consistent with the past answers (H-H is a s-s.. like the bond between H and H.. while H-Cl is a s-p.. since Cl's p orbital connects with H's s orbital.. so my reasoning was that since the bond between the carbons are for sure, p-p.. like the actual bonding between the 2 carbons is where the two p orbitals meet, i put p-p..)</p>
<p>what do you think</p>
<p>"oh yea.. the xH3 and XCl4 and Xsomething is phosphorous"</p>
<p>Are you sure? Why did I get aluminum?</p>
<p>What are the CE's</p>
<p>so for lab one, you swirl it because of vapor pressure something (choice A) rite?</p>
<p>mm because phosphorous is +5 OHH sorry it was XCl5 (so -5 oxidation... and +5 for phosophorous.. and then PH3 works as well.. i forgot the 3rd one)</p>
<p>Yea.. I'll remember the questions if someone gives me couple answer choices uhh which lab one?..</p>
<p>oh yea, vapor pressure of 0.040 something and 0.060 with a total pressure of 600 mm Hg.. what's the partial pressure of the 0.040 compound.. it's 400 since 2/3 * 600</p>
<p>I got 4 TTCE</p>
<p>I use the constant function for the PV/P relationship, because anytime the value of P goes up by some factor, it cancels out. </p>
<p>Octane does not dissolve;
Alpha Particle was used Twice;
The other was electron;
for Acid/Base Combonation was the one where it went up very steep and tapered off because it was the equivalence point of a titration;</p>
<p>^ post, was the very first question about the alpah particle a t,t,ce?</p>
<p>does anyone remember any more problems..?</p>
<p>
[quote]
can someone explain to me why it's sp^3? i thought of AB4 => hybridization sp^3, but how can it be sp^3 - sp^3 when they both share each other's carbon.. and it's not consistent with the past answers (H-H is a s-s.. like the bond between H and H.. while H-Cl is a s-p.. since Cl's p orbital connects with H's s orbital.. so my reasoning was that since the bond between the carbons are for sure, p-p.. like the actual bonding between the 2 carbons is where the two p orbitals meet, i put p-p..)
[/quote]
</p>
<p>Look at each carbon separately. Each one is bonded to four other molecules. Doesn't matter that the carbons are bonded to each other. Each one is still sp3.</p>
<p>There was a question: Which of the following is the strongest bond?
C-O
C-C
C=C
C-H</p>
<p>It's C=C, right?</p>