CHEMISTRY COMMUNITY

BrianaBarr2A

In reaction mechanisms, how do we determine which step is the slow step if it is not given to us?

BrianaBarr2A

how would you draw out 2-butene or anything with a number in front of it ??? For 2-butene the number identifies where the double bond is located since but ene (the -ene means a double bond) so it is located on the second Carbon. For anything else with a number in front of it, it just means what car...

BrianaBarr2A

for #1, why do we need "iso" infant of propyl? wouldn't the 4- signify the branching? This is because "iso" identifies that there is 2 CH3's coming off of 1 CH (in all there is 3 carbons so prop). That is what CH(CH3)2 means so iso is used and it is connected to the 4th carbon a...

BrianaBarr2A

204177206 wrote:Will Quiz 2 be 40 minutes as well, and of similar format as Quiz 1?

Yes this is correct, Dr. Lavelle formats all his quizzes this way.

BrianaBarr2A

I saw this in the chapter in the textbook and am curious about the answer/people's thoughts. It states, what would be the units of k for an overall order of 3/2 if the concentrations were expressed in grams per milliliter, g.mL-1?

BrianaBarr2A

Is there any chance we will get the answers to Quiz 1 to help study for the midterm?

BrianaBarr2A

Hi Everyone, I have a question on #10. So when I did the problem, I divided 200/20, but I was wondering if someone can please explain the conversion factor to get the answer on the key? Thank you I'm not sure if the conversion factor is on the key for this one or not but you first have to convert d...

BrianaBarr2A

deantuazon2G wrote:So for number 11, do we just assume that the deltaH given is per mole?

Yes just assume it's per mole

BrianaBarr2A

I know people have already posted how to find work (w) for #3 but what do we do to find heat (q)? I know the problem consists of an ideal gas, change in volume and pressure, etc.. but is it just a modified version of q=nC(delta_T)? From what I was told, for this q=-w so it's just the negative of wh...

BrianaBarr2A

For number 6, I'm a little stuck on which equation to use. Could someone help me with this?

BrianaBarr2A

So for an ideal gas your focusing on only one atom. But for a monatomic gas you're focusing on multiple atoms(N) so each of the three directions (x, y, and z) contribute 1/2 kT per molecule, for a total of 3/2NkT per molecule.
Hope thats what you were looking for!

BrianaBarr2A

Heat capacity is an extensive property because it depends on the amount of the substance being used such as if 5ml is being used or 10ml. So an intensive property doesn't depend on the amount of substance being used so it doesn't matter if 5ml are being used or 10ml.

BrianaBarr2A

I'm really lost on where the third reaction comes from when writing the chemical reactions like what we did in class today. Can someone explain to me why its there and how we get it?

BrianaBarr2A

When solving these equations, where does log come from? Why d we use log?

BrianaBarr2A

Do we include solids and liquids in Kp? I know we don't in Kc and am confused about Kp so would just like to clarify.

BrianaBarr2A

Is it true that all hybridized orbitals have sigma bonds?

BrianaBarr2A

I'm very lost on how to find the hybridization of each lone pair, will this be on the midterm?

BrianaBarr2A

So I know what numbers for l correspond with the given n, and I know the possible m1 values for a number l, but how do we find m2? (sorry I feel like I worded this question weird!)

BrianaBarr2A

So if we were to draw a nucleus on the periodic table to show which elements are closer to it in this case, would it go in the upper right corner of the periodic table or the bottom left? (I think I'm thinking too hard about this)

BrianaBarr2A

Does anyone have any tricks for memorizing conversion units? I'm so bad at converting and always forget to convert certain numbers and get them mixed up!

BrianaBarr2A

Neutrons do diffract when passing through a crystal and exhibit wave-like properties it just depends on the mass of the neutron.

BrianaBarr2A

So if a decimal is present, the numbers before it and after it are counted and that's how many are sig figs? Then, if there is no decimal in the number, there is only one sig fig?

CHEMISTRY COMMUNITY

Search found 22 matches

Rate Limiting Step

Re: Quiz 3 Winter 2017

Re: Quiz 3 Winter 2017

Re: Quiz 2 Winter 2017

Re: Rate law factors [ENDORSED]

Re: Quiz 1 Preparation Answers

Re: Quiz 1 Preparation Answers

Re: Quiz 1 Preparation Answers

Re: Quiz 1 Preparation Answers

Re: Quiz 1 Preparation Answers

Re: 8.31 Monatomic Gas

Re: Heat Capacity

Weak base-strong acid

using log

Kp

Re: Hybrid Orbitals

Re: 2014 Midterm Q8

Re: Quantum Numbers and Atomic Orbitals

Re: Ionization Energy [ENDORSED]

Re: Memorization Tricks

Re: Neutrons

Re: Easy Way to Calculate Sigfigs