Search found 10 matches
- Sun Mar 19, 2017 1:00 pm
- Forum: *Alkanes
- Topic: Naming [ENDORSED]
- Replies: 93
- Views: 15702
Re: Naming [ENDORSED]
So cis- trans- and E, Z are always interchangeable? No, cis/trans is comparing identical groups or the longest chain, but E/Z is based on a priority system. The question will probably ask to label something as either cis/trans OR E/Z. But if it doesn't specify, it's suggested to always use E/Z beca...
- Sun Mar 19, 2017 12:56 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2765014
Re: Post All Chemistry Jokes Here
If you ever forget how to draw a chair, just remember the Budweiser logo!
- Fri Mar 17, 2017 9:20 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 504477
Re: Saying Thank You to Dr. Lavelle
Dr. Lavelle,
Thank you so much for always being encouraging of us and patient. Your cheerful attitude made class enjoyable!
Thank you so much for always being encouraging of us and patient. Your cheerful attitude made class enjoyable!
- Mon Mar 06, 2017 4:29 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Intermediates and transition states
- Replies: 1
- Views: 522
Intermediates and transition states
On page 85 in the diagrams of the transition states, I noticed that where H attaches to C in the intermediate it is written as CH 2 . It's also written that way in step 2 as the product. But on the previous page that part of the intermediate is written as CH-H (bond is a vertical line). I was wonder...
- Thu Mar 02, 2017 6:58 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Friday Review Session Broadcast
- Replies: 3
- Views: 647
Re: Friday Review Session Broadcast
Just wondering if anything about this has been organized yet?
- Sun Feb 26, 2017 10:41 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Review of Organic Chem from Chem 14A
- Replies: 1
- Views: 428
Review of Organic Chem from Chem 14A
What topics specifically would be beneficial to review from the organic chemistry portion of Chem 14A, other than Lewis structures and hybridization? I'm finding that I need to review this information a bit more to fully understand what we are covering in class now.
- Sun Feb 12, 2017 8:12 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Scientific Notation
- Replies: 1
- Views: 479
Scientific Notation
I noticed a lot of the solutions to textbook problems in the solutions manual use scientific notation at every step of calculations when the values are rather large. But when compared to my final answers they're a couple values off (I would input it all into my calculator at once and then convert to...
- Sun Jan 29, 2017 10:06 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Quiz question #7
- Replies: 1
- Views: 474
Quiz question #7
On the practice quiz it's asking which of the list of processes leads to an increase in entropy and I don't understand why "5) A glass of water loses 100J of energy reversibly at 30ºC" doesn't lead to an increase in entropy. If it's a reversible process and the temperature is constant, mor...
- Sat Jan 21, 2017 7:51 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Reversible vs irreversible [ENDORSED]
- Replies: 2
- Views: 736
Re: Reversible vs irreversible [ENDORSED]
Pages 32-33 of the Course Reader say: Systems are often approximated as reversible: calculate maximum work w max = w rev (>w irr ) All real processes are irreversible. Biochemical systems often use highly irreversible reactions to speed up the process. But less efficient (less useful work done) w re...
- Sun Jan 15, 2017 8:56 pm
- Forum: Phase Changes & Related Calculations
- Topic: Other examples of elements which go through sublimation
- Replies: 4
- Views: 4181
Re: Other examples of elements which go through sublimation
In the textbook on page 368 it gave a couple more examples of substances that sublimate: "Some solids vaporize in the process called sublimation , which we can observe at room temperature in the presence of pungent solids such as menthol and mothballs (naphthalene)". Naphthalene is used in...