<p>H2O2 + H2 -> H2O + O2???</p>
<p>Are you sure? It seems rather complicated with oxidation of both oxygen and hydrogen and also the reduction of oxygen?</p>
<p>Was it just a balancing question?</p>
<p>"If you got decimals, then multiply the whole thing by a number to get integers.</p>
<p>If you got integers, then change the numbers that you chose to plug in."</p>
<p>Oops, I meant negatives.</p>
<p>cool strategy afruff i’m totally going to use that next balancing one, if its difficult. Yeah jenkster I thought it might be something else, I was soo confident the answer was 2 at the time??? </p>
<p>and pinki do you have those questions yet!! you got me excited!</p>
<p>Afruff - the main thing you have to worry about with that method is redox reaction (which the alleged reaction is). You’d have to have as many electrons lost as gained.</p>
<p>okay, I’m in AP chem and have done redox reactions.</p>
<p>I don’t think doing redox with this reaction works because for redox you do 2 half-reactions: one oxidation and one reduction. In this case there would be 3 half reactions since two things are oxidized and one thing is reduced.</p>
<p>Bottom-line: You can’t solve this by doing redox or this equation is wrong (more likely).</p>
<p>Ya, I don’t think this was the exact equation on the test. It’s just too weird.</p>
<p>I am pretty sure it was 4 in the equation guys but the QUESTION might have asked something else which could have been a different number… so yeah.</p>
<p>This makes no sense and I am confused. I remember 2 for some answer on the chemistry SAT II. end of story.</p>
<p>Well, I remember 60.</p>
<p>Damn. I am guessing in total I got 9 pts off. I know of 6 already…</p>
<p>stupid SAT IIs.</p>
<p>Don’t despair. After both my SAT I and Bio SAT II I came on CC and got SO depressed because after reading all the discussion I was sure that I bombed the tests… but I ended up with really good scores both times.</p>
<p>And yet here I am again… don’t ask.</p>
<p>Yeah, CC is really both a blessing and a curse! Its unfortunate no one really knows the curve either. Its unsettling to see all the answers I got wrong though…</p>
<p>I was really disappointed after the test. I spent way too much time on the T/F/CE section and ended up rushing through a lot of the test.</p>
<p>I skipped 7 questions, and I’m prone to stupid mistakes. So I’m assuming a score around 730. Ugh.</p>
<p>I was stuck on a gas question for the longest time… I knew I could work it out so I kept doing it and wasted a lot of time. Ended up rushing near the end and skipped 2.</p>
<p>Anyone remember that gas question? I think it asked for temperature change give a certain change in pressure and volume?</p>
<p>YES I REMEMBER THAT. I don’t remember the answer though. But I think 27 had something to do with that. Maybe original temperature…or volume. or something? not the answer though.</p>
<p>I think I got 400/300…for something…</p>
<p>Ah me too!! =D I think…</p>
<p>Ahaah, GOOD! Was that for that question, or for another one? And do you remember any one having to do with H2O2, no one can remember the equation</p>
<p>Wasnt it like 75/76K?</p>
<p>I got 75 K for another one, Yunu. But not 75/76 K 
for this one. What are you referring to?</p>