CHEMISTRY COMMUNITY

Jennifer_Lam_1A

What is the difference between equatorial and axial?

Jennifer_Lam_1A

How do you know what number to put before the substituent? I understand it is how many carbon molecules there are before the substituent is attached, but I recall that in class, Professor Lavelle mentioned that it can be read left to right or right to left. How does this work?

Jennifer_Lam_1A

Can someone please explain #5 on the practice quiz? I thought the answer would be A because you have to take into account temperature when finding the activation energy.

Jennifer_Lam_1A

I was wondering what "order of the reactant" actually means. When given a problem, when the problem tell us what order it is or would we have to figure that out. If we have to find it out on our own, how would we do so?

Jennifer_Lam_1A

Hi everyone! On page 48 of the course reader, it says to use Pt as the inert conductor as the electrode to transfer the electrons. I was wondering where they got the Pt from. Is it just a random element to transfer the electrons?

Jennifer_Lam_1A

When finding the entropy of step 1, why isn't C multiplied by (5/2) as the question says that it is at constant pressure?

Jennifer_Lam_1A

On the reactant side, there are 2 C-H bonds, but the coefficient says 3, so technically, there are 6 bonds. On the products side, there are 6 C-H bonds. Those cancel out so you don't need to take them into account when calculating the reaction enthalpy. Hope this helps :)

Jennifer_Lam_1A

I was looking at the practice quiz in the back of the course reader and I wasn't able to find the answers to check my work. Does anyone know if there is an answer key?

Jennifer_Lam_1A

In lecture today, we went over page 39 in the course reader. Can someone please explain how do you know if it is a "gas phase only" reaction (T>333 K) or if it is a "liquid phase only" (T<333 K) I understand how to find T and I understand why we have to look at this problem in th...

Jennifer_Lam_1A

Can someone please reexplain why steam causes more severe burns than boiling water? Thanks!

Jennifer_Lam_1A

For temperature, should it be in Celsius or Kelvin?

Jennifer_Lam_1A

I think you're referring to when approximating x. You omit the x in the denominator just to approximate x. Once you find the x, divide it by the molarity given. If it is smaller than 5%, it is a good approximation. I hope that answers your question!

Jennifer_Lam_1A

I wrote in my course reader that resonance affects the stability of the anion. Can someone explain to me how this works? (unless I wrote it down completely wrong haha)

Jennifer_Lam_1A

How would you know if it's -x or +x for the change in molar concentration? (p. 137 of Course Reader)

Jennifer_Lam_1A

When do you use when z>8 and z<8 for the molecular orbital diagram? What exactly is z?

Jennifer_Lam_1A

On page 98 of the course reader, it says that H2O has a bond angle of 104.5 as opposed to 109.5. Can someone please explain this to me? If this question were on an assessment, do we have to specifically say 104.5 or can we just indicate that it would be around/less than 109.5? Thanks in advance!

Jennifer_Lam_1A

How would you write the electron configuration for Iodine2- using the noble gas abbreviation? Would you use [Xe] or [Kr]?

Jennifer_Lam_1A

When do you know when to use Px, Py, and Pz respectively? Is it okay to, when writing the electron configuration, to just generalize it as just P?

Jennifer_Lam_1A

Hi everyone! I had a question regarding the sigfigs about electron emission. When using Rydberg's equation, certain questions only give out the energy level (i.e. n=3). When calculating the answer, do we use the sigfigs given in the Rydberg constant or from the energy level? Here is Rydberg's equati...

Jennifer_Lam_1A

Hi everyone! In lecture, someone asked what constitutes "measurable wavelike properties" to which Professor Lavelle answered 10^-15. Is that number applicable to all objects? If so, does that mean that a wavelength smaller does NOT have the properties whereas a wavelength that is greater D...

Jennifer_Lam_1A

Same same I'm down! I'm in 2N but i'm totally cool with going to any floor!

CHEMISTRY COMMUNITY

Search found 21 matches

Equatorial and Axial

Substituent Naming

Re: Quiz 2 Winter 2017

Order of Reactant

Conductor as an Electrode

Finding C in Chapter 9 #19

Re: Chapter 8 Number 73

Practice Quiz Answers

Gas Phase Only vs Liquid Phase Only

Steam Burns [ENDORSED]

Re: Enthalpy

Re: ICE

Resonance and Stability

Calculating the Equilibrium Composition [ENDORSED]

z<8 and z>8

Bond Angle

Electron Configuration for Ions

Px, Py, Pz [ENDORSED]

Electron Emission Sig Figs

Worked Example on page 52 in the Course Reader

Re: Rieber Hall 14A Study Group (Fall 2016)