<p>ebonytear said: "Wait, no...I got like 7, 6, and 2."</p>
<p>Yup. That's what I got. You're right
C7H6O2 - taht's the molecular AND empirical. Pwned.</p>
<p>And both WERE 122.
7(12)+6+2(16)=122</p>
<p>We're right...everyone else is wrong. Take that, byotches! W000t.</p>
<p>Yeah, I got 7,6, and 2. And [Al(OH)4]- is correct, it's an exception to the rule that the number of ligands is generally a multiple of the charge of the cation. Our chem teacher made sure we knew that one.</p>
<p>i did 6.1 x 10^ 2 also because of sig figs. (For K... don't know which problem that was)</p>
<p>for the 1st acid base equilibrium...</p>
<p>i think i got a pretty high concentration for something... like 14Mish.. for something??</p>
<p>and [H+] was liek 5.5 x something? i dont' remember.. :S</p>
<p>I'm pretty sure i got a 5 though.</p>
<p>Spartan Pho3nix + ieatglue: YAY! I feel so much better now. Glad to know some people agree with me! I thought it was totally off b/c everyone else had such diff. answers. :)</p>
<p>ohh!! I got the exact same value of Ka for methanoic acid on the test, which means I did the whole equilibrium FR correct!!!!!!! WOOHOO!!!</p>
<p>Or it just means you did the last two parts right...:)</p>
<p>bah! lol nah, i got the first two parts right too!</p>
<p>Hey, does anybody know how many points Solubility (the one with the three solutions), Flame test (wooden stick), and the section with formal charge will be worth, approxiamately?</p>
<p>Just the individual parts, not the whole problems...</p>
<p>Thanks.</p>
<p>:)</p>
<p>splints is probably 1 point each, solubility part probably 3-4 points total, and the formal charge thing is probably 2 points</p>
<p>I already said the answers for the flame tests:</p>
<p>Flame tests:
1. N2 - Flame is turned down. Sometimes there is brown fumes coming out.
2.H2 - Small combustion with a "pop" sound
3.O2- flame rekindles.</p>
<p>hehe you can thank my chem teacher for FR #1, I was wondering why the format felt similar... Go good teachers.</p>
<p>I got my FR question booklet back. Did ur teachers hand back ur booklets too?</p>
<p>are the questions posted on collegeboard yet?</p>
<p>yes.. they are posted up</p>
<p>The empirical formula was C7H6O2.</p>
<p>The molecule is benzene with a carboxyl functional group (COOH) attached. The molecular mass was about 121-122.</p>
<p>can somebody please post solutions to all of them?</p>
<p>most of them are already posted..
and people here are too lazy to redo equilibrium</p>
<p>If I missed the part about the carboxyl group being responsible for the pH of 2.6, how many points will be taken off?</p>
<p>Probably only 1. That's a question where either you know it or you don't - not like a math one where you can tinker around a bit. I would definitely say only 1 point for that.</p>
<p>OK, question. Im probably the only idiot who made this mistake. For the bonding question (#6 i think) it asked for the bond angle of "F-C-F". I know that tetrahedrals have 109.5 but at the last second i changed it to 180 because it stated specifically F-C-F instead of showing the actual tetrahedral structure or instead of asking for it "around the C atom". I figured it was a trick question, lol. Yeh, i know theres electron repulsions so it wouldnt be exactly 180...etc so i put approximately 180. Is there anyway i could get credit for this or was this completely insanely stoooooooopid?</p>