<p>n is the principal quantum number...it can be equal to 0,1,2,3... It gives the number of energy levels of an atom</p>
<p>For the three apparatuses, I thought 3 buret would be logical.. however, I didn't think that the testmakers would put 3 same answers in a row, so I left the 2nd one blank (because it could have been the volumetric flask)..</p>
<p>Otherwise, I thought this was SOOO much easier than the PR practice tests. I took my first practice test last night with PR at 1:00am and didn't get anything right.. the questions were unbelievably hard and the book didn't cover any of them</p>
<p>principal quantum = n; use process of elimination (the shape of orbitals was 1 answer, and the orientation was another.. both mean the same thing, therefore, both are wrong)</p>
<p>any ideas on how many to miss to get an 800 on this one?</p>
<p>4 wrong and 5 omitted as usual probably.</p>
<p>I think i made 800 (2 wrong for sure, and prob at least 1 wrong on T/F part), i hope u did too :)</p>
<p>EDIT: It might be 3 wrong and 4 omitted, not to sure really.</p>
<p>how many can u miss for a 600+?</p>
<p>what the hell was the one about "standard lab procedure"</p>
<p>It said like "which is NOT standard lab procedure"</p>
<p>a) Doing the experiment with somebody else always present in the room
b) Putting unused chemicals back in their original containers
(C-D were wrong)</p>
<p>I couldn't chose between the two!</p>
<p>i thought it was the one where u do it with other people or something
lol that was so weerd</p>
<p>it was putting USED chemicals back. but even if its unused, u still dont put it back, could cause comination. that was the answer.</p>
<p>is it really 3 wrong 4 omitted for an 800??</p>
<p>the CB book is wayy too harsh then?</p>
<p>^ Hooray! I got it right!</p>
<p>it was used????
no way...... i couldve sworn it said unused.....</p>
<p>still u dont return unused stuff..nothing else made ANY sense</p>
<p>^^ really? so u just waste it all....?</p>
<p>i donno about u guys, thats wat we do in our labs. it prevents contamination. if it was taken out into the lab, there is the chance that it came in contact with other materials. for example, in our flame test lab, after the lab was completed, excess solution that was not burned but poured out to be used was disposed of.</p>
<p>What did anyone put for the transition metal that has 3 unpaired electrons? Or something like that?</p>
<p>And...all transition metals have semi-filled d orbitals?</p>
<p>Yeah..I put that putting back unused chemicals in their containers is not standard lab procedure.. That could lead to contamination, I would think..?</p>
<p>i put cobalt for that. im pretty sure it is..</p>
<p>all transition metals have semi-filled d-orbitals and i put cobalt as well (it has to be cobalt)</p>
<p>@looboo i put those</p>
<p>acetone was the asnwer right for the graph of boiling points?
and the last TF was TTCE (it had the setup with the water pressure?)</p>
<p>I know not to put unused chems back (contamination and such), but I've never heard of not doing experiments unless somebody else is present. I guess from a safety perspective this makes sense, but still... all the great chemists of centuries ago did the stuff on their own! ;)</p>
<p>ima try to compile some q's</p>
<p>acetone was the asnwer right for the graph of boiling points?
the last TF was TTCE (it had the setup with the water pressure?)</p>
<p>the one with butane and then that butane has more hydrogen per molecule is TT</p>
<p>the reaction CS2 + O2 -> SO2 + CO2? not C right..</p>