Search found 14 matches
- Sat Mar 18, 2017 1:28 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 571916
Re: Saying Thank You to Dr. Lavelle
Thank you Dr. Lavelle, You were my professor for both Chem 14A and 14B. You are definitely an incredible professor who cares about the education of his students; the sheer time, effort, and patience needed to provide the astounding amount of resources you offer is unimaginable. Thank you so much for...
- Sun Mar 12, 2017 5:00 pm
- Forum: Student Social/Study Group
- Topic: Khan Academy
- Replies: 1
- Views: 594
Khan Academy
Hey guys, I'm sure many of you already know of this resource, but Khan Academy is great for giving you a quick overview of most of the topics we've covered in Chem 14B. The videos are short and informative so if you need a refresher before going to a review session, check it out. PRO TIP: Sal from K...
- Thu Mar 09, 2017 2:01 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Prep answers
- Replies: 6
- Views: 1314
Re: Quiz 3 Prep answers
Hi guys, I can't seem to find where the solutions for Quiz 3 are posted, can someone help me out? Thanks!
- Tue Feb 14, 2017 6:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1
- Replies: 5
- Views: 1054
Re: Quiz 1
Hi, I was wondering how we check our answers on the prep quizzes/midterms? I may have missed when/if it was mentioned at all.
Thanks!
Thanks!
- Wed Feb 01, 2017 6:07 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Self-Test 8.12B
- Replies: 1
- Views: 524
Self-Test 8.12B
"The reaction 4Al(s) + 3O2(g) --> 2Al2O3(s) was investigated as part of a study on using aluminum powder as a rocket fuel. It was found that 1.000 mol Al produced 3378 kJ of heat in this reaction under constant-pressure conditions at 1000. degrees Celsius. What is the change in internal energy ...
- Sun Jan 29, 2017 9:31 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Example 8.5 in Textbook
- Replies: 1
- Views: 661
Example 8.5 in Textbook
"CALCULATING THE WORK, HEAT, AND CHANGE IN INTERNAL ENERGY FOR THE EXPANSION OF AN IDEAL GAS Engineers working to develop new piston engines and turbines need to be familiar with the work and heat that are involved in various compression and expansion cycles that they use to model new engines. ...
- Thu Jan 19, 2017 4:47 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Chapter 8 problem #9
- Replies: 2
- Views: 639
Re: Chapter 8 problem #9
Hi, I was also wondering this and, after looking it up, I think this may be right: So after finding the area and multiplying it with the distance we end up with: 141.1 cm^3 We then multiply 141.1 cm^3 with 2.00 atm to get 282.8 cm^3*atm. Recall that 1 cm^3 is equal to 1 mL. 1 mL*atm = 0.101325 Joule...
- Tue Jan 17, 2017 4:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Drawings in Course Reader?
- Replies: 1
- Views: 429
Drawings in Course Reader?
I don't know if anyone else mentioned this or if it's only my course reader, but I was flipping through the practice tests and on page 139, there's some drawings of Pokémon?? I tried to erase it but I think it may actually be printed on the page.
Just wanted to bring that to someone's attention.
Just wanted to bring that to someone's attention.
- Sun Jan 15, 2017 6:32 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 14A to 14B Changes in Chem Community
- Replies: 2
- Views: 708
14A to 14B Changes in Chem Community
I was unclear on how Chem Community would transition if we were in 14A last quarter. Would the server know to give us credit for 14B or would we have to sign up again, etc.? When I signed in right now, I changed my username to include my discussion section so does that satisfy any and all things I n...
- Mon Oct 24, 2016 8:27 am
- Forum: Administrative Questions and Class Announcements
- Topic: Bruincast
- Replies: 26
- Views: 10637
Re: Bruincast
Also, if after you have downloaded Microsoft Silverlight and the Webcast still insists that you need to download the program, try using the Internet Explorer browser instead.
Best of luck.
Best of luck.
- Wed Oct 19, 2016 11:15 am
- Forum: Administrative Questions and Class Announcements
- Topic: Video Modules
- Replies: 1
- Views: 528
Video Modules
I find the video modules very helpful, will there be more of them posted on the website as we continue through the chapters?
- Mon Oct 10, 2016 12:04 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3654185
Re: Post All Chemistry Jokes Here
Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar?
A: He got Avogadro's number!
A: He got Avogadro's number!
- Sun Oct 09, 2016 11:56 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Terminology Clarfication [ENDORSED]
- Replies: 7
- Views: 1603
Re: Terminology Clarfication [ENDORSED]
Thank you very much for the clarification.
- Sun Oct 02, 2016 8:54 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Terminology Clarfication [ENDORSED]
- Replies: 7
- Views: 1603
Terminology Clarfication [ENDORSED]
"Calculate the molar mass of copper(II) sulfate pentahydrate." What does the (II) attached to the copper element mean? And how does it affect the molar mass or any part of the compound? Also, are we expected to instinctively know the elements that make up a compound when it is written out ...