Search found 19 matches

by Katie McCombs 3G
Fri Mar 17, 2017 10:35 am
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Ring Flip: Final
Replies: 2
Views: 301

Ring Flip: Final

If we are asked to draw a ring flip on the final should we include the boat conformation transition, or should we simply draw the two chair conformations?
by Katie McCombs 3G
Sun Mar 12, 2017 11:48 pm
Forum: *Cycloalkenes
Topic: 2 Substituents on a Ring
Replies: 2
Views: 379

Re: 2 Substituents on a Ring

Since it is in a ring structure, you are correct that the number will always be the same. Therefore it is the common practice of a ring with 2 substituents to give the first named substituent the lower number.
by Katie McCombs 3G
Fri Mar 03, 2017 10:53 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 14716

Re: Quiz 3 Winter 2017

For kinetics, what part of the book is on the quiz? Does "Reaction profiles, Arrhenius equation and calculating activation energies" mean that it is only 15.11 and 15.13, or will the rest of chapter 15 be on the quiz? Also, just to be clear, is Catalysis on there? Catalysis is included in...
by Katie McCombs 3G
Sun Feb 26, 2017 11:44 pm
Forum: *Nucleophiles
Topic: nucleophiles
Replies: 2
Views: 291


If a nucleophile is identified by its desire for protons, are all molecules with negative charges then nucleophiles.
by Katie McCombs 3G
Sat Feb 18, 2017 4:29 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 14258

Re: Quiz 2 Winter 2017

Nikhita_Jaaswal_2H wrote:Will Quiz 2 also cover materials from before the midterm (in between Quiz 1 and midterm)?

No quiz 2 will only cover kinetics
by Katie McCombs 3G
Sat Feb 11, 2017 11:35 pm
Forum: Administrative Questions and Class Announcements
Topic: 14C
Replies: 4
Views: 396


Hey so I know that it will be hard to get spots in 14C like it was to get spots in 14B, and I was curious if Hardinger's policy for the waitlist was like Lavelle's. Lavelle told us when we were registering last quarter that if we made it on the waitlist we would get in the class, so I was curious if...
by Katie McCombs 3G
Sun Feb 05, 2017 6:45 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Single electrode redox
Replies: 1
Views: 234

Single electrode redox

When oxidation and reduction reactions are run through a singular electrode that has a voltage applied across it it will run only one of the reaction at a time. What determines whether it goes through oxidation or reduction. Obviously the solution being used needs to be capable of going up or down. ...
by Katie McCombs 3G
Sun Jan 29, 2017 10:50 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: entropy versus degenercy
Replies: 1
Views: 239

entropy versus degenercy

So I'm just trying to clarify
Entropy (S) is the likelihood that a system will be in a certain state and degeneracy is the number of ways of achieving a given energy state. So for the certain state represented by S, W represents the number of ways of getting to the energy level of that formation?
by Katie McCombs 3G
Sun Jan 22, 2017 10:30 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Homework
Replies: 2
Views: 349


I'm looking at the chapter 8 problems and need a little more clarification on open, closed, and isolated systems. Could someone give me another example of each of these systems that we haven't used yet?
by Katie McCombs 3G
Tue Jan 17, 2017 11:36 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Isolated Systems [ENDORSED]
Replies: 3
Views: 469

Re: Isolated Systems [ENDORSED]

In this case it is saying it is the best example of an isolated system. While we know that over time it does lose heat, it in theory (if it is a quality thermos) acts as an isolated system that does not exchange heat or matter.
by Katie McCombs 3G
Thu Dec 01, 2016 2:29 pm
Forum: Administrative Questions and Class Announcements
Topic: Bring to the final [ENDORSED]
Replies: 2
Views: 329

Bring to the final [ENDORSED]

Is there anything we need to bring to the final in addition to a pen, a scientific calculator, and a photo ID?
by Katie McCombs 3G
Sat Nov 26, 2016 12:31 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Clarification of pH versus pOH [ENDORSED]
Replies: 1
Views: 219

Clarification of pH versus pOH [ENDORSED]

So I just want to clarify...
If I were given a problem asking me to calculate the pOH value of something and I was given the concentration of H30+ I would calculate the pH and then subtract the calculated value rom 14.00 to get the pOH, correct?
by Katie McCombs 3G
Tue Nov 15, 2016 10:25 am
Forum: Naming
Topic: Amine
Replies: 1
Views: 241

Re: Amine

An amine is classified as an organic compound derived from ammonia (NH3) by replacing one of the hydrogen with an organic compound. For example, in en and dien, the H is replaced by a bond to a carbon molecule.
by Katie McCombs 3G
Sun Nov 13, 2016 11:54 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Quiz #3 [ENDORSED]
Replies: 7
Views: 720

Quiz #3 [ENDORSED]

As far as MO theory goes there are not practice questions on the quiz that address it, but I thought I remembered it being included in things that would be on Quiz #3. I just wanted to see if anyone could give me a solid answer on whether MO would or would not be on Quiz #3.
by Katie McCombs 3G
Sun Oct 30, 2016 4:26 pm
Forum: Limiting Reactant Calculations
Topic: Percent Yield
Replies: 3
Views: 1266

Percent Yield

Can someone remind me of the formula for percent yield in the event of a limiting reactant?
by Katie McCombs 3G
Sun Oct 23, 2016 5:39 pm
Forum: Electronegativity
Topic: Electronegativity
Replies: 2
Views: 356


Does anyone know if we will be provided with a periodic table with electronegativity values for the quiz?
by Katie McCombs 3G
Sun Oct 23, 2016 5:35 pm
Forum: Trends in The Periodic Table
Topic: Electronegativity Difference
Replies: 1
Views: 289

Re: Electronegativity Difference

No, the number of molecules of each element should not have any effect. The electronegativity difference is for a specific bond, therefore it should only consider two of the molecules.
by Katie McCombs 3G
Mon Oct 10, 2016 2:52 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Showing Work [ENDORSED]
Replies: 3
Views: 452

Showing Work [ENDORSED]

I assume we are expected to show work on our quiz responses, but I was curious if anyone had any idea to what degree we were expected to show work? For example, would I need to show how I came up with the molar mass for something, or can I simply just plug in the molar mass I calculated?
by Katie McCombs 3G
Sat Oct 08, 2016 9:36 am
Forum: Properties of Light
Topic: Homework Problem 1.55
Replies: 4
Views: 559

Re: Homework Problem 1.55

Kaitlin_Ryan_ 3I wrote:Why is it necessary to plug in Planck's constant for part (a) of this problem?

Where would Planck's constant be plugged in to?

Plugging in Planck's constant is not necessary. All the other steps they listed are correct, but Planck's constant is irrelevant in this problem.

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