<p>The very last one with the H2 and excess NH3 was .67 mol.</p>
<p>What was the given equation?
I don’t remember if I put .67 or 1.3.</p>
<p>The given equation was the Haber process: N2 + 3H2 ==> 2NH3</p>
<p>I hope I also put 2/3. Not 100% sure . . .</p>
<p>I put .67, quite certain</p>
<p>The saltwater/vapor pressure was F F, I believe. FP is a colligative property; adding any kind of solute decreases FP, so saltwater has a lower freezing point. Vapor pressure is also a colligative property, so saltwater and distilled water don’t have the same VP.</p>
<p>I think the F2/Na question asked for the best oxidizing agent, which would be F2. If the question were asking for best reducing agent, it would be Na, though.</p>
<p>Also, the H2+O2–>H2O question was 9 grams of H2 and 9 grams of H2O, right?</p>
<p>^^ Yup. H2 was in excess</p>
<p>I also got 9 g and 9 g.</p>
<p>Shoot! I misread the question and thought it was asking which would be most easily oxidized instead of oxidizing agent… T_T</p>
<p>so does iron conduct electricity better than phosphorus bc it has more electrons? was that a CE?</p>
<p>I didn’t put a CE, but I’m not sure.
I thought it was because Iron is a metal, and phosphorus isn’t, not because of electrons.</p>
<p>Zinc does conduct electricity better than phosphorus: T</p>
<p>Zinc does have twice as many electrons as phosphorus: T (I think I may have put F…oh f–k)</p>
<p>Zinc conducts electricity better because metallic bonding allows for a “sea” of electrons: No CE</p>
<p>T T only.</p>
<p>Did I accidentally put T F? Hmm…</p>
<p>It was ZINC… and it has nothing to do with the # of electrons. Bromine has more electrons than zinc but zinc still conducts better electricity mainly because it is a metal.</p>
<p>what would everyone say the difficulty of the sat ii chem is compared to the ap chem multiple choice?</p>
<p>^I thought it was very similar.</p>
<p>can anyone compile a list of T/F questions? And the AP Test is far more difficult than the sat 2</p>
<p>P2O5(s) + 3 H2O(l) → 2 H3PO4
just 1! yay</p>
<p>What was the answer to…Contains 1 mole of molecules</p>
<p>answers were like </p>
<p>32g O2
6.02x10^23 atoms of something
6.02x10^23 atoms of something else
and more choices</p>
<p>It was 22.4 L of He (g) at STP.</p>
<p>i put the one with He(g) =__= it was only one with 1 atom</p>