<p>to be or not to be that is the q</p>
<p>oh okay. I usually skip if i cant narrow it down to 2 choices.</p>
<p>The last PR practice test was really weird, I hope a lot of those questions don't actually show up on the real test.</p>
<p><em>Joins</em> I've heard chem is harder to get an 800 on than bio, so I think I'm actually going to have to prep in advance for this. I haven't really looked at chem since the AP test, so this should be interesting. I have Barron's and plan on doing the practice tests during the next couple days.</p>
<p>oh kool, so the last PR test is wierd eh? I thought the first test was wierd cuz it had some bio stuff in it.. The second one seemed fair :].</p>
<p>Well, I'm not gonna spoil anything on the test, but it definitely requires people to know random chemistry knowledge. You'll see..</p>
<p>I think biology was covered within a page in the organic section.</p>
<p>wow. thanks for the help...</p>
<p>bad news guys. I just took the Chemistry Practice Test from the CD that comes with the REA book.... and i got a 620.. i mean, i wasnt really thinking THAT much and i really didnt give it my all (possibly cuz its on the comp ... . . .nd i prefer book tests).. but still, out of curiosity, are REA tests harder/easier than the PR/CB tests?</p>
<p>i think they are. i read somewhere that their just insane.</p>
<p>er can some more ppl confirm that? Cuz its really making me feel bad. I thought i was somewhat prepared/almost done when i got a 750 on the PR.. but now this makes me feel like cramming. Anybody got a link or something?</p>
<p>anybody? please? lolcats help?</p>
<p>I tried doing a sparknotes one and got in 600's, how do these compare to real tests?</p>
<p>And also,</p>
<p>Can anyone help on a question in the Subject tests preparation booklet (free :) ) as in how to set these problems up and answer?
What is the minimum number of moles PbSO4 that must be used to prepare 1 liter of saturated OBSI4 solution at 25 degrees C. Ksp = 1 x 10^-8?</p>
<p>Bumping because I also want an explanation to Yopua's questions.</p>
<p>PbSO4 -> Pb(+2) + SO4(-2) [<- balanced equation]</p>
<p>Ksp = [Pb(+2)]*[SO4(-2)]</p>
<p>substitute values:
1 x 10^-8 = [x]*[x]</p>
<p>solve for x, x = 1 x 10^-4 M, since its 1 L, you have 1 x 10^-4 moles</p>
<p>yeah, so anybody know anything about REA and its difficulty?</p>
<p>I got a 750 on my second sparknotes test, but I haven't taken the real thing yet. Apparently sub-700s on sparknotes have gotten 800 on the real test though. Any more word on this would be great.</p>
<p>Thanks nd09! I can't believe I forgot all that despite just taking the AP test. Thanks!</p>
<p>I am in the same boat as you sushant. I got a 670 on first test, and a 730 on second. Hoping to get a 750 on real, using both barrons and pr atm.</p>
<p>oh, yeah PR seems okay, i mean, it seems fair. REA on the other hand, i got a 620 >_> REA better be like barrons cuz if its like the real thing, then that SUX.</p>
<p>I'm taking the REA one's also.</p>
<p>I got 720+ on most of them... But I took a Barron's one and got an 800. So in my opinion, REA is definitely harder. Sparknotes is a lil harder also.</p>
<p>Is everyone here taking the SAT II Chem on June 7th?</p>
<p><em>EDIT</em></p>
<p>ALSO!</p>
<p>The 3rd practice test in the REA book has some crazy organic chemistry on it. So that further proves my point that REA is harder than usual.</p>