<p>mole ratio was .1 (V) to .05 (O) so i think it was VO2</p>
<p>and yeah, NaCl is distillation and that silver nitrate reaction formed a precipitate so it needs filtration</p>
<p>it was T and F</p>
<p>Sapience, that question was confusing .. I mean, what's so dangerous/incorrect about heating a test tube in a fume hood w/a bunsen burner? It depends what you're heating up. I said not to mix acid-->water but I just found out that was wrong D:</p>
<p>Walton, I got VO2 .. there was 0.1 mol V, .2 mol O, so divide each mols by 0.1 (smallest one) and you get VO2</p>
<p>I thought it as V2O2 because both were .1 moles</p>
<p>also for the mole ratio for Ag and S, was it 2: 3</p>
<p>I think you mean Al:S=2:3.</p>
<p>For the T/F question with diamond & graphite .. was in F, T? They have different structures but both made of carbon.</p>
<p>it wasn't a test tube being heated in a bunsen burner, it was a grad cylinder</p>
<p>and, yes to dolcevalse...</p>
<p>NaF highest bp?</p>
<p>^ could you clarify? don't recall a grad cylinder..</p>
<p>it said a solution in a graduated cylinder was being heated with a bunsen burner under a fume hood...you're not supposed to heat the grad cylinders (obviously), so that was the correct answer. Also, the other choices were all acceptable laboratory procedures anyway.</p>
<p>NaF does have highest bp due to highest lattice energy (bond strengths)
It was VO2 (you could also justify it be comparing the mass percentages, around 62.5% vanadium).
I messed up the incorrect lab procedure :/ but ya its definitely bunsen burner in a fume hood. You're not supposed to do that, regardless if its grad cylinder or test tube. I think it was heating a solution in a grad cylinder or something. EDIT: maybe you can depending on the hood...so then the other reason would be the grad cylinder heating that princeton just stated.</p>
<p>Diamond and graphite was F/T.</p>
<p>i put NaF as highest BP because highest EN difference..but idk if that's a viable reason.</p>
<p>shoot, I imagined grad cylinders as a beaker .. wth is wrong with me, lol. well that's 1 question wrong!</p>
<p>princeton, weren't they asking for highest MP with the Na and halogens? I chose NaAt. BP would be completely diff.</p>
<p>omg, i can't believe i read BP as MP.. wow, maybe i should just cancel my scores right now</p>
<p>he asked Bp</p>
<p>dolce - whats the reasoning for NaAt having highest MP? Wouldn't it still be NaF for MP too?</p>
<p>highest MP means IMFs are weak .. At is much less EN than F, so NaAt would be weakest</p>
<p>Oh...for the element that would react the most with water i put Cr is that right since it would oxidize easily?</p>
<p>wouldn't a higher MP mean that more heat is required to break the bonds and therefore signify stronger IMFs?</p>
<p>Rb because its an alkali</p>
<p>wow, if C --> CO2 is oxidation, I'm so far so good</p>
<p>Others:</p>
<ul>
<li>Acid rain and limestone = neutralization</li>
<li>Acid rain and some sulfur compound in the T/F/CE was what? I forgot the true and false parts (dammit)</li>
<li>2.0 for the pH somewhere</li>
<li>1.0 x 10^-3 somewhere near the end</li>
<li>heat of sublimation?</li>
</ul>