May 2013 SAT II Chemistry

<p>I think it was 200 something; it was the greater negative enthalpy + 110.</p>

<p>Pretty sure you got that right Becca. I had some difficulty with ones that should have been easy, too. For the first one, what was pyramidal? And for the combining the 2 gases from different containers into one container, what was the total pressure? I think I put 4 atm.</p>

<p>NH3 was pyramidal; I had 4atm as well.</p>

<p>What did you all get for the pressure of the gas with the mercury? I had 720mmHg.</p>

<p>If pyramidal is the same thing as trigonal pyramidal (I hate when there isn’t constant terminology haha) I think it’s ammonia.</p>

<p>some answers</p>

<p>4 atm
89.6
sucrose
H2O freezing = exothermic and dec entropy</p>

<p>:/ I don’t remember having a string of D’s…
And I had a load of TF’s i think…</p>

<p>The terminology is the dumbest thing. I put 720 mmHg also. What letter was the answer choice for ammonia? And does anyone remember the letter of question 70?</p>

<p>What did you think of the using pictures to ask what lab equipment was used for what? I was not a fan.
Was it extract exact amount → pipet; observe while heating → the little stand you put a test tube on; heat high temperatures → the little cup thing?
And is the thing you’re least likely to use in a titration a bunsen burner because you have no reason to heat anything up? (I clearly hate labs lol)</p>

<p>Yeah, i had a ton of TFs too.</p>

<p>I feel like my answer to question 70 might have been C but I really have no idea.
I know my first answer was A, though.</p>

<p>I got the same thing as you for the lab equipment, except that I put the buret, not the pipet for the exact amount. I think it was letter E. I’m fairly sure that’s the answer.</p>

<p>I had a bunch of TFs as well, SohamD. Maybe the Ds were split up if we had different forms.</p>

<p>For transferring the exact liquid, I chose the E (tube that was wide in the middle). Graduated pipet?</p>

<p>volumetric pipet*</p>

<p>Haha oops. Oh well. -2 so far isn’t that bad.</p>

<p>@jjfine96 yeah thats what i wrote too. pretty confident its correct… :D</p>

<p>Can anyone explain to me why the total pressure was 4atm?</p>

<p>the last question was .2M soln of NaCl
is the same as
0.2 mol NaCl per liter solution</p>

<p>@ddlk66
Could you rephrase your question?</p>

<p>I think he’s stating it as the answer to the last question ._. Did someone ask about it?</p>

<p>mass percentage one was SO3?</p>