<p>I said electronic structure as well… oh boy</p>
<p>What did you guys put for the equipment needed to determine the change in enthalpy of something? </p>
<p>And there was this one question that asked what affects the pressure of gases… 1) # of moles 2) volume of container and 3) reaction between the gases</p>
<p>What was the answer?</p>
<p>btw- electronic structure means same thing as electron configuration</p>
<p>@jooninnyc: Mass number is the sum of the number of protons and neutrons.</p>
<p>i didn’t see valence electrons so i put atomic number but i now realize that its electron structure because that includes valence electrons.</p>
<p>is a H3O+ concentration of 1 x 10^-2 M acidic? i had to think about that one for awhile for one of the MC questions.</p>
<p>@NYJ: The answer to your question is yes. if you take the negative log of that, you get 2, which is pretty acidic</p>
<p>[Electron</a> configuration - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/Electronic_structure]Electron”>Electronic structure - Wikipedia)</p>
<p>AHHHHHH!
Now i think of it,
I think you guys are right!
But how are electronic configuration and electronic structure same ?
isnt’ electronic structure referring to tetralhedral, bent, linear etc?</p>
<p>i’m hoping that electron configuration is synonymous with electron structure</p>
<p>and one more question!
i think there was a question that said
which of the following is not linear…
what did you guys put for that one?</p>
<p>@joon: H2O is bent, I didn’t really look at anything else after that</p>
<p>@Lemon
Thank god!
i wasn’t sure if h2 was linear
because h2 is not 180
but i still put h20!</p>
<p>@ Lemon,
I think they are synonymous if you think wikipedia is somewhat trustworthy…</p>
<p>does mass number = atomic mass?
the reason i thought mass number =proton number was because
i didn’t think that mass number might equal atomic mass./?
anyway. i’m starting to talk nonsense s;ka</p>
<p>@ joon,
mass number is how much the atom weighs … so it’s # of protons + neutrons</p>
<p>What did you guys put for the equipment needed to determine the change in enthalpy of something? </p>
<p>And there was this one question that asked what affects the pressure of gases… 1) # of moles 2) volume of container and 3) reaction between the gases</p>
<p>jooninnyc , just for ur info, the H2 molecule IS NOTHING but LINEAR. i mean, its a simple diatomic molecule …obviously there’s no question of any ‘bending’ when a line joins 2 points in space ??? so that should dispel any doubts…</p>
<p>ilikebananas, i ticked all 3 of them … pretty straightforward, i hope ?</p>
<p>And the one about measuring the enthalpy of fusion seemed confusing actually… i didn’t attempt it eventually, but decided that it’s most likely only the calorimeter and the thermometer.</p>
<p>@ ssur,
I couldn’t find an option that included only the calorimeter/thermometer, so I included the balance as well. Since we need to know the mass of the substance in the equation q=mc t?</p>
<p>yea i said thermometer, calorimeter and balance…barometer is for pressure right? SO that has nothing to do with heat of fusion.</p>
<p>i put thermometer, calorimeter, and balance
and for the one about affecting gas’s pressure</p>
<p>i put number of moles only</p>