<p>@wldb15 It was definitely CE.</p>
<p>@yhhswds I think it was at what time is a quarter of A turned into B…Just take a fourth of the initial concentration and match with time. It was relatively straightforward, so I don’t remember exactly the answer.</p>
<p>to all, are covalent bonds broken when something evaporates? (I said false…The bond could be ionic, mettalic, etc)</p>
<p>And does anyone remember the relationship one about endothermic reactions? What did you put?</p>
<p>@hendersonHYPS I don’t think covalent bonds break when something evaporates. (when water evaporates, the covalent bonds in between don’t break, but the IMF forces do)*i think</p>
<p>@Debias12 Thanks, that what I got. So i think it was True, evaporation is an endothermic process, and False, covalent bonds are not broken during evaporation?</p>
<p>Or am i confusing two questions?</p>
<p>@hendersonHYPS yes that’s right. and btw it was at what time is half of A turned into B</p>
<p>@moscow997 Yeah, i don’t remember specifics. I just remember thinking it was easy.</p>
<p>Any other questions?</p>
<p>When two elements combine, the compound doesn’t have to be polar, does it? I put F, T for that one because different elements usually have different electronegativities. </p>
<p>I put the value when B turned to half of A, not when A was half of it’s original value. How about you? </p>
<p>I think the diatomic one was TF. Because I2 that is Iodine exists as a diatomic molecule and its a solid right?
And the test was pretty normal. But I guess that’s because I use Barron’s. Idk.</p>
<p>40s when half of A turned to B</p>
<p>@thatindianguy @omarhaider I agree with thatindianguy. I said when half of A turned to B. And the diatomic was defnitely TF. </p>
<p>Do you remember the last two relationship anlaysis?</p>
<p>@hendersonHYPS I don’t remember anything properly because I was really screwed up over not having brought my calculator for Math II- which was to say the least fudged!
But vaguely I think it was something relating to bonds being polar and electronegativities. Normally I’d put FT but they had used the word “Usually” in both the sentences. So I marked it TTCE with a heavy heart.</p>
<p>What’s the answer for question about partial pressure of the gas if the total pressure was 790 mm Hg?</p>
<p>@thatindianguy It was definitely TTCE, and in fact, most bonds are polar. Molecules may not be polar if bonds are symmetrical, but bonds themselves are polar.</p>
<p>@triplelutz I believe it was 400mmHg. (0.04 moles gas)/(0.1 moles total) * 10^3 mm Hg…</p>
<p>@hendersonHYPS That’s what I marked (40 seconds), guess the way i wrote it here made it confusing.
@thatindianguy @hendersonHYPS did the question ask if the bond was polar with two different elements or with the same? </p>
<p>@omarhaider it said different because when i read it the first time i made sure to reread it again to emphasize the word “different” for myself xD</p>
<p>@omarhaider It was most probably different.</p>
<p>Got 700 in May and raised to 770 in December test! woohoo 
</p>
<p>Got 700 in november and raised it to 760 
not that satisfied but I am quite happy</p>
<p>Was the first time I took the subject tests… Got 760 in Chem and 690 in Maths II (forgot to bring my calculator)… But I guess I won’t be applying to US colleges so now these scores are useless… [-X </p>