Search found 14 matches

by Sonam Sidhu 2J
Sat Mar 18, 2017 1:28 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 209
Views: 97932

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...
by Sonam Sidhu 2J
Sun Mar 12, 2017 5:00 pm
Forum: Student Social/Study Group
Topic: Khan Academy
Replies: 1
Views: 375

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...
by Sonam Sidhu 2J
Thu Mar 09, 2017 2:01 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Prep answers
Replies: 6
Views: 685

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!
by Sonam Sidhu 2J
Tue Feb 14, 2017 6:10 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1
Replies: 5
Views: 576

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!
by Sonam Sidhu 2J
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: 279

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 ...
by Sonam Sidhu 2J
Sun Jan 29, 2017 9:31 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Example 8.5 in Textbook
Replies: 1
Views: 265

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. ...
by Sonam Sidhu 2J
Thu Jan 19, 2017 4:47 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Chapter 8 problem #9
Replies: 2
Views: 299

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...
by Sonam Sidhu 2J
Tue Jan 17, 2017 4:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Drawings in Course Reader?
Replies: 1
Views: 248

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.
by Sonam Sidhu 2J
Sun Jan 15, 2017 6:32 pm
Forum: Administrative Questions and Class Announcements
Topic: 14A to 14B Changes in Chem Community
Replies: 2
Views: 313

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...
by Sonam Sidhu 2J
Mon Oct 24, 2016 8:27 am
Forum: Administrative Questions and Class Announcements
Topic: Bruincast
Replies: 26
Views: 8074

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.
by Sonam Sidhu 2J
Wed Oct 19, 2016 11:15 am
Forum: Administrative Questions and Class Announcements
Topic: Video Modules
Replies: 1
Views: 261

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?
by Sonam Sidhu 2J
Mon Oct 10, 2016 12:04 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7567
Views: 1010887

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!
by Sonam Sidhu 2J
Sun Oct 09, 2016 11:56 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Terminology Clarfication [ENDORSED]
Replies: 7
Views: 925

Re: Terminology Clarfication [ENDORSED]

Thank you very much for the clarification.
by Sonam Sidhu 2J
Sun Oct 02, 2016 8:54 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Terminology Clarfication [ENDORSED]
Replies: 7
Views: 925

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 ...

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