Search found 8 matches
- Sat Mar 18, 2017 1:42 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 563244
Re: Saying Thank You to Dr. Lavelle
Thank you Dr. Lavelle! Your very nice attitude and professional manner in teaching Chem 14B really helps us learn this subject well. You offer us many resources and facilitate class discussion(especially chemistry jokes lol), and I am really glad to have you as my Chem 14B professor! Thank you and b...
- Sun Mar 12, 2017 11:28 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3631827
Re: Post All Chemistry Jokes Here
Q: What did thermometer say to the graduated cylinder?
A: "You may have graduated but I've got numerous degrees"
A: "You may have graduated but I've got numerous degrees"
- Sun Mar 05, 2017 12:09 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3631827
Re: Post All Chemistry Jokes Here
I don't want to tell jokes in class because I might get NO REACTION
- Tue Feb 21, 2017 9:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3631827
- Mon Feb 13, 2017 9:51 pm
- Forum: Second Order Reactions
- Topic: Questions about limiting step
- Replies: 1
- Views: 540
Questions about limiting step
In the lecture, Prof. Lavelle gives the example of NO2(g)+CO(g)-->NO(g)+CO2(g) in which the first step of two NO2 colliding limits the rate of the whole reaction because RATE=k[NO2]^2. So I would like to know if there is any example of a bimolecular reaction in which the rate is determined by the se...
- Mon Feb 13, 2017 9:30 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Midterm 2015 Q6
- Replies: 1
- Views: 355
Midterm 2015 Q6
For this question I understand how K is calculated using the formila -RTlnK. However, when I tried to apply another formula E=E nod-0.05916V/n logQ, and tried to assume E=0 since at this time Q=K at equilibrium, I found that the answer that I calculated is not the same as the answer given. Could som...
- Mon Jan 30, 2017 11:32 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: 9.81
- Replies: 1
- Views: 642
Re: 9.81
Hello, First of all, based on the two chemicals Fe3O4 and Fe2O3, I think you need to figure out a chemical reaction to link these two chemicals together and transvert one into another. The oxidation reaction 4Fe3O4(s)+O2(g)-->6Fe2O3(s) should be the easiest to think of. Then it can be possible to ca...
- Sun Jan 22, 2017 10:43 pm
- Forum: Calculating Work of Expansion
- Topic: Example of reversible expansion?
- Replies: 1
- Views: 556
Re: Example of reversible expansion?
I feel that the reversible expansion is more or less an ideal situation with the same internal and external pressure. "Reversible" here is similar to the "reversible" characteristic of a chemical equilibrium, where the infinitesimall changes in reactants and products are always o...