<p>Also the first question isn’t tf its FT iono if we established this already or not</p>
<p>also the ttce one for the pressure (one w/ picture of eudiometer) can’t be ttce because no where does it account for vapor pressure of water making the second one false</p>
<p>Yes, the first one is FT because the orbitals were not filled correctly.</p>
<p>For the eudiometer one, I don’t think the first statement was true. I don’t see a reason why the water levels in the eudiometer and in the flask should be equal for it to be properly used.</p>
<p>Also, the first question was definitely FT. Electrons don’t begin to pair until each orbital has at least one electron.</p>
<p>For the one about safe lab procedures, what was the correct answer? I thought it was the fire-polishing one because all of the others seemed to be good lab practices, but not I’m not sure.</p>
<p>I remembered that problem from a lab we did in class, but you want to read it when it is at the same level as the atmospheric pressure because you won’t know what the pressure is inside as you measure the volume of gas without making the inside equal to atmospheric pressure. Otherwise, you wouldn’t be able to make calculations with PV=nRT without the value of the pressure.</p>
<p>The safety procedure one was pouring water into acid to diluate it because you pour acid into water. Think about it, if you poured water into acid, you could splash the acid by accident.</p>
<p>hm… for the eudiometer i put tf just because when we did an experiment w/ collecting gas by water displacement our teacher told us to even the levels of the waterr w/ the water inside the tube. something to do w/ equalizing pressure to get accurate water reading.</p>
<p>I put the fire polishing one because the rest are for sure right and your always supposed to throw broken glass away immediately</p>
<p>Oh okay, that makes sense. So far, I’ve got four mistakes, and none omitted.</p>
<p>I’m so annoyed at the lab safety question. I wasn’t paying close enough attention, and for some reason I thought the emphasis was placed on pouring water slowly. And that one was so easy. Ugh.</p>
<p>That’s what I thought, hydroxideion. However, Masterus is right. You’re never supposed to pour water into a stock solution of acid, so…</p>
<p>My only mistake so far is the brass question. I honestly didn’t know the answer. I thought that the first section was harder than 26-70.</p>
<p>I knew that brass had either iron or zinc in it, and I chose iron.</p>
<p>I felt that the first section had lots of descriptive chemistry. However, none of it was too difficult, at least not in my opinion. I hesitated a bit on the glass one, but I remember reading that the production of glass was somehow related to sand, and I know that silicon is in sand, so I made the connection.</p>
<p>The question about brass was in a set with a second question, and I can’t remember what that one was, but I remember being unsure for it. Anyone remember?</p>
<p>Yeah, I went with iron as well only because I saw the word galvanized and I thought about steel. I didn’t expect a question like that haha.</p>
<p>I honestly just skipped that, didn’t want to take any risks.
What was the answer to the stuff about the Rutherford experiment?
And the one about “pure hydrocarbons having the same percent composition”, was that T or F?</p>
<p>I’m pretty sure the galvanized one is zinc because galvanizing something means to coat it in zinc.</p>
<p>Pure hydrocarbons don’t have the same percent composition. Take for example ethane (C2H6), ethene (C2H4), and ethyne (C2H2). All are pure hydrocarbons, but with different percent compositions.</p>
<p>For the Rutherford experiment, I remember that the second statement was about the total volume of an atom that is occupied by the nucleus, and I know for a fact that, though the nucleus is the densest part of the atom, it doesn’t, by any means, occupy much of the volume.</p>
<p>So the answer was TT.</p>
<p>Galvanizing involves coating in iron or zinc, by the way.</p>
<p>Yes, the answer was zinc, I just meant that I picked iron because I didn’t know at the time.</p>
<p>For the Rutherford experiment, I put TTCE because the reason explained why a very small amount of the particles were deflected from the first statement.</p>
<p>Brass is made of copper and zinc, so that is 100% the answer.</p>
<p>So I know I missed the Galvanized one but missing 1 is still an 800</p>
<p>There was a question about hydrocarbons. Was it TT or TTCE?</p>
<p>The question with the phase diagram about vapor pressure of solid and atmospheric pressure was E right? The points where gas and solid are in equilibrium.</p>
<p>I don’t remember if I put TT or TTCE for the Rutherford question. Damnit.</p>
<p>the was a TTCE about the NaCl and AlCl3 and which one has a more ionic character. Was it TT? Since NaCl is more ionic but it’s not because Cl is more electronegative.</p>