<p>yay, me too I put +5 for the oxidation number. And... yeah, it's high pressure low temp.</p>
<p>ahhhh, i put high temp and high pressure. i knew i was wrong on that one. im getting REALLY nervous now.</p>
<p>The answer is high pressure and low temperature because high pressure would prevent free motion and lower temperature would also do the same. One of the ideal characteristics is unrestricted free motion.</p>
<p>
[quote]
Sorry if this is repetitive. But Bohr diagram:
1. shortest one would be the least energy.
2. excited electron would be from principal energy 1 to 2 (A I believe)
3. what about the other one? and explain please. (I don't remember the question, but I didn't know this one for sure).
[/quote]
</p>
<ol>
<li>Shortest line represents the least energy.</li>
<li>Not necessarily. In atoms that have electrons in higher energy levels, electrons jump into a higher energy orbital, not necessarily a complete energy level. And B also showed 1 to 2.</li>
<li>I picked A, but I don't remember any of the lines going to infinity, otherwise I would have known that one.</li>
</ol>
<p>ok so i know a lot of you got 0.79 for the density question thing
but i did 33 divided by 35 to make sure. and i got like 0.94 (closest to 1.0)
it's closer to one........but i guess i'm wrong.</p>
<p>You had to find the mass of the container and then subtract it from the total mass they give you and then divide the remainder (the mass of the molecules, I forgot what it was) by 10mL.</p>
<p>I thought of it this way: you have the same volume of two different substances. Water, with a density of 1.00, weighs more than the other substance. Therefore, the other substance must have had a lower density. The only density lower than 1.00 was .79.</p>
<p>anyone remember #22,23, and24?? last problems of the first part...
i put a,a,c...is it right???</p>
<p>if you told me what they are, maybe i could help?</p>
<p>the one with the isomers was it I and II?
it was the same structure except Cl and H attached to diff. places</p>
<p>yeah the isomers were I and II. III had a different molecular formula (3 Cl)</p>
<p>anyone remember #22,23, and24?? last problems of the first part...
i put a,a,c...is it right???</p>
<p>it was probably about activation energy...</p>
<p>hmm the activation energy one i believe i put A. it was something ike Ea and Eb or something are both activation energies, determined using the graph that was given of a catalyst and without a catalyst. is that the question ur talking about? if you remember the other questions i coudl help.</p>
<p>oh yeah...it was activation energy or ionization energy...i kinda guessed on that but it was somewhat educated...so i dont know...:)</p>
<p>does anyone remember the tt/ce question where it said evaporation is cooling process because the molecules that leave have high kinetic energy leaving the ones with low kinetic enery? i put tt/ce i think</p>
<p>yeah i put tt/ce as well. i thought about perspiration on that question and it made sense.</p>
<p>is score or percentile more important?</p>
<p>I'd say score seems more important at first, but when you think about it percentile means much more than a number is scaled.</p>
<p>Percentile doesn't mean much for subject tests because most people don't take them. Only the people who are good at a subject will that that subject test, so you are just comparing yourself with people who are good at chemistry.</p>
<p>if you put ce but forgot to bubble in TT would that be counted worng??</p>