CHEMISTRY COMMUNITY

Diana_OToole_1F

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...

Diana_OToole_1F

If you ever forget how to draw a chair, just remember the Budweiser logo!

Diana_OToole_1F

Dr. Lavelle,
Thank you so much for always being encouraging of us and patient. Your cheerful attitude made class enjoyable!

Diana_OToole_1F

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...

Diana_OToole_1F

Just wondering if anything about this has been organized yet?

Diana_OToole_1F

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.

Diana_OToole_1F

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...

Diana_OToole_1F

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...

Diana_OToole_1F

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...

Diana_OToole_1F

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...

CHEMISTRY COMMUNITY

Search found 10 matches

Re: Naming [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: Saying Thank You to Dr. Lavelle

Intermediates and transition states

Re: Friday Review Session Broadcast

Review of Organic Chem from Chem 14A

Scientific Notation

Quiz question #7

Re: Reversible vs irreversible [ENDORSED]

Re: Other examples of elements which go through sublimation