<p>can you remember anything else?</p>
<p>For the balancing equation problems, we didn't have to use redox techniques for all of them did we? I think I didn't use redox for any of them.</p>
<p>eh, why is it CE for the activiation energy one? what WAS the explanation?</p>
<p>does CsF have greater ionic character than LiF?</p>
<p>Yes, because the difference in electronegativities between Cs and F is greater than that between Li and F. Electronegativity increases from left to right and decreases from top to bottom.</p>
<p>Can someone start compiling a list of correct answers?</p>
<p>Here are the TT CE's i remember: The gold foil one, and wasn't the one about hydrogen bonding and water being more dense TT CE? WE haven't taked about that one yet...</p>
<p>Was there another tt ce? Was that the activation energy question?
The questions showed a reaction of A going to B, and it was exothermic (i think) in the forward direction. Does that mean the forward reaction is faster?? I think i did TT CE, but i dont think so, cuz maybe its not spontaneous or whatever...</p>
<p>for the hydrogen bonding and water beign more dense, i think it is T,F</p>
<p>Ok well ill start i guess:</p>
<p>1.SiO2 for glass
2.Nh4(whatever) for fertilizer
3.CfCl for ozone destruction
4.SO3 for acid rain</p>
<p>5.A diff number of neutrons for isotope
6.Amount of protons for determination of element
7.The outermost electron number is different</p>
<p>8.Oxygen structure, had two dots on 2 sides of O, and one on the other two sides
9.For the alkali metal, it had just one dot</p>
<ol>
<li>HCl created a pH of 7</li>
<li>(wasnt there one where the NH4Cl created a basic solution??)</li>
</ol>
<p>12.Gold foil: TTCE
13.Density of water: TT CE
14.Orbital question: FF</p>
<p>15.The crucible one was D(electron transfer)
16. there was a question whose answer was electron transfer
17. .16 for the question about X,Y, and Z
18. The ? about mass percentages of C2H6O was 53%for C, 13% for H, and 34% for O
19. The last problem ( i hope!) was Bef2 of Cl2, or whatever the element was
20. Buret
21. Buret
22. Don't remember the other lab equip. ansdwer, but it ewas easy :)
23. 3 was coefficient for OH (it combined with Fe)
24. KNO3 was the solid after precipitation
25. the graph of T versus V was a straight slope of positive one
26. the hydrogen forming water graph went straight up then flattened out
27. I believe H20 is least in air (cuz it said under NORMAL CONDITIONS)
28. OH- is strongest bronsted lowry base (right??)
29. pouring water into acid is the INCORRECT procedure (cuz u want to avoid acid splash back)
30. .24 was the concentration of Cl-
31. 2.00 was the density (sig figs!)
32. 10 was for the hydrate one</p>
<p>wow, i didnt think i could remember that much! all right guy,s ur turn :)
30.</p>
<p>didnt it say that hydrogen bonding creates more space in the ice, therefore making it less dense?</p>
<p>Somewhere around 9 and 10, it also asked for the configuration of a noble gas . . . or it was some halogen with a negative charge, so it had the symbol w/ the 8 dots around it</p>
<p>I actually got most of the ones you listed . . . and don't remember a few of them, but that's better than I thought, lol</p>
<p>And the electron transfer question had to do with some redox equation . . . they wanted to know another name for it</p>
<p>I think the air one was water . . . . <a href="http://mistupid.com/chemistry/aircomp.htm%5B/url%5D">http://mistupid.com/chemistry/aircomp.htm</a>
That site has all the things that are in air</p>
<p>13.Density of water: TT CE
i think i got TF for that one</p>
<ol>
<li><p>KNO3 was the solid after precipitation
if i'm on the same question, i remember BaCrO4 as an answer to a precipitate problem.. i may be on the wrong problem tho</p></li>
<li><p>I believe H2O is least in air (cuz it said under NORMAL CONDITIONS)
dude H2O is water vapor... and there's lots of it in the air. answer is H2. if there was more H2 in the air than H2O, wouldnt the earth like blow up or something?</p></li>
<li><p>OH- is strongest bronsted lowry base (right??)
i got CO3 2-, because it can accept two hydrogens?</p></li>
<li><p>2.00 was the density (sig figs!)
i think u meant 1.00</p></li>
</ol>
<p>everything else i've matched you with..</p>
<p>I think something besides OH- for the bronsted-lowry base question</p>
<p>1.00 was the density . . . didn't it come out to be something like 11/11?</p>
<p>I actually put H2 on that are question too, but I'm just looking around online to see what I can find</p>
<p>Yeah, KNO3 was the right answer. It asked for the soluble thing, which then would be precipitated.</p>
<p>Barium dichromate comes out as a precipitate first, so it has to be Potassium Nitrate.</p>
<p>Yeah, that was an odd question. It said that the precipitate was discarded and then after something evaporated it asked what was left . . . . I also put KNO3</p>
<p>sorry, it was 1.00.</p>
<p>Umm, on the H2O, you could be right. I got that one wrong anyway. But a friend told me ''under normal conditions" means there is no water vapor. And this makes sense kinda. On the website posted, H2O wasn't listed as a constituent. So I dunno.</p>
<p>But on the density one. What did it say?
We know water is more dense (or ice is less dense). But didn't it also say the hydrogen bonding in ice creates more space? That is correct, if that's what it said, and therefroe TT CE...</p>
<p>Yeah part of the that density one said "the hydrogen bonding in ice creates a more open structure than water"</p>
<p>Part 1 was "ice is less dense than water"</p>
<p>And that BL base question was a good one...how do u go about doing it? I now have a feeling it was HCO3 2-. Man, this sucks, I missed a lot lol...</p>
<p>So im 99% the ice one was TT Ce. Variance 2004, where are you lol?</p>
<p>"for the activation energy one with A-->B and B-->A:
I think it's F,T</p>
<p>Wasn't the first statement about how the rate of the forward is greater than the rate of the reverse Rx? Since the temperature wasn't given, you can't tell if the forward Rx is favored....right?"</p>
<p>Ya, so you assume that the forward = reverse, so statement I is false and statement II is true...</p>
<p>You got that one right I think</p>
<p>I think for the BL base one I figred that a BL base was a proton acceptor . . . so it just made sense that CO3 2- could accept more H+ than OH-</p>