Search found 21 matches

by Ashley Curtis 2O
Sat Mar 18, 2017 2:54 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Equatorial and axial bonds
Replies: 4
Views: 658

Re: Equatorial and axial bonds

In the photo, which bond would be which on the carbon I labeled 3? How would I be able to tell that on a test?
by Ashley Curtis 2O
Sat Mar 18, 2017 2:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 200
Views: 45716

Re: Saying Thank You to Dr. Lavelle

Dear Dr. Lavelle, After a bad experience in AP Chem, I really thought I hated chemistry, and that I could never understand it. Then I had you as a professor for both chem 14A and 14B, and I must say when I first picked your class, I was scared that I would hate it. I didn't. Having you as my profess...
by Ashley Curtis 2O
Wed Mar 08, 2017 5:30 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 15260

Re: Quiz 3 Winter 2017

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...
by Ashley Curtis 2O
Wed Feb 15, 2017 5:24 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Changes in both volume and temp [ENDORSED]
Replies: 5
Views: 603

Re: Changes in both volume and temp [ENDORSED]

How would you be able to tell whether or not a reaction occurs at a constsnt temperature?
by Ashley Curtis 2O
Sat Feb 11, 2017 3:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Winter 2017
Replies: 87
Views: 13979

Re: Midterm Winter 2017

I am having trouble viewing the midterm review session. Is there any one else having this problem? It says the plugin is not supported when I try and watch it.
by Ashley Curtis 2O
Sat Feb 11, 2017 3:14 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: 2013 Midterm Q6B [ENDORSED]
Replies: 1
Views: 242

2013 Midterm Q6B [ENDORSED]

In the 2013 midterm Q6B, we are asked to determine when different quantities provide a criterion for assessing the spontaneity of a reaction. Why are we unable to tell whether the reaction is spontaneous or not using delta S but we can tell using delta S (total)?
by Ashley Curtis 2O
Wed Feb 01, 2017 6:05 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 13264

Re: Quiz 1 Preparation Answers

Can anyone explain how they calculated the enthalpy of vaporization for question 4? deltaH sublimation = deltaH vaporization + deltaH fusion so by manipulating the equation to make deltaH vaporization = deltaH sublimation - deltaH fusion, you can then calculate the enthalpy of vaporization given th...
by Ashley Curtis 2O
Fri Jan 13, 2017 11:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Random Enrollment Checks
Replies: 9
Views: 1193

Re: Random Enrollment Checks

How would these random enrollment checks be conducted? Would they take up lecture time?
by Ashley Curtis 2O
Sun Dec 04, 2016 12:27 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: bond order question [ENDORSED]
Replies: 3
Views: 429

Re: bond order question [ENDORSED]

What does it mean if something has a bond order of 2.5? Is it a shorter double bond?
by Ashley Curtis 2O
Fri Dec 02, 2016 4:13 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Charge of ligand
Replies: 1
Views: 434

Charge of ligand

On question Q5A from the 2015 final, it asks what the charge of the ligand called "corrin-DMB" is, and hints that this can be found by taking the formal charges of each coordinated Nitrogen. In the answer, it says that the top left Nitrogen has a formal charge of -1. How do you get that fo...
by Ashley Curtis 2O
Sat Nov 26, 2016 10:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 825509

Re: Post All Chemistry Jokes Here

If the Silver Surfer and Iron Man team up, they’d be alloys.
by Ashley Curtis 2O
Sat Nov 19, 2016 10:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 825509

Re: Post All Chemistry Jokes Here

If you're not part of the solution, you're part of the precipitate
by Ashley Curtis 2O
Sat Nov 12, 2016 11:13 pm
Forum: Bond Lengths & Energies
Topic: Bond length, 2012 Midterm Question 6B
Replies: 3
Views: 531

Re: Bond length, 2012 Midterm Question 6B

A better way to figure this out is by determining the bond order of each, rather than drawing out the lewis structures.
by Ashley Curtis 2O
Tue Nov 01, 2016 8:17 pm
Forum: Bond Lengths & Energies
Topic: Bond length, 2012 Midterm Question 6B
Replies: 3
Views: 531

Bond length, 2012 Midterm Question 6B

Using molecular orbital theory, list the following molecules from shortest bond length to the longest bond length.

B2^+, B2, B2^-, B2^2-

How would you tell which which would have to shortest or the longest length?
by Ashley Curtis 2O
Wed Oct 26, 2016 6:09 pm
Forum: Octet Exceptions
Topic: Octet Exception
Replies: 4
Views: 617

Re: Octet Exception

So would atoms in the 3rd period fill their d orbital or go to a 4p orbital?
by Ashley Curtis 2O
Wed Oct 19, 2016 11:33 am
Forum: Ionic & Covalent Bonds
Topic: Electronegativity and Bond Types
Replies: 2
Views: 358

Electronegativity and Bond Types

Would we have to memorize the electronegativity values in order to tell which is an ionic or a covalent bond?
by Ashley Curtis 2O
Sun Oct 09, 2016 10:09 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty
Replies: 11
Views: 1821

Re: Uncertainty

So if the equation does not use a +/-, then the uncertainty of speed is the value given, but if it does include a +/-, the uncertainty is the value doubled? I thought that the value always meant that it the uncertainty was that value above or below? For example, even if the question had not said +/-...
by Ashley Curtis 2O
Sun Oct 02, 2016 9:28 pm
Forum: Administrative Questions and Class Announcements
Topic: Peer Facilitated Learning Sessions
Replies: 32
Views: 10927

Re: Peer Facilitated Learning Sessions

In the chem refreshers, each person who was holding a session was focusing on a specific topic. Will these sessions be the same way? Or would they just answer the questions each student brings to the learning sessions?

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