CHEMISTRY COMMUNITY

Diego Cortez 2J

What's more fire than Drake's new album...
Chemistry Community

Diego Cortez 2J

Hope this question makes sense.. These are two examples taken from Problem Set 2 (E )-3-bromo-2,4-dimethylhepta-2,4-diene (Z)-4-ethyl-6-methylhept-3-enal Why is one hepta- and one hept-? What are the rules when it comes to adding/dropping the -a? Can someone explain to me when to use trans and cis?

Diego Cortez 2J

paulapedrani wrote:Does anyone in De Neve want to make a study group? It's only been two days and I already feel behind.

What about a Study Group tomorrow?

Diego Cortez 2J

Thank you for this I also had this question on my quiz. One more thing, on question four where would the deltaG rxn and deltaG transition go for an endergonic and exergonic reaction?

Diego Cortez 2J

Because of the double bond. We would have to prioritize the double bond and cross it. You would start with the Chloro right next to the bond as 1 and continue counting from there.

Diego Cortez 2J

Homework questions will be on the final, and there might be a question from chemistry community?? not sure about that one

Diego Cortez 2J

Thank You Dr. Lavelle for your enthusiasm for teaching. Thank you for two great quarters of chemistry. Everyone appreciates all of the resources you have provided for us. For Chemistry Community, office hours, UA sessions, and review sessions. Thank you for everything that you have done for us this ...

Diego Cortez 2J

I think they'll be given. If not just memorize the lowest and highest relative energies.

Diego Cortez 2J

For the cathode and anode make sure that they are in the correct state. So for cathode make sure it is written as a reduction. For the anode make sure its being oxidized. And if you have to switch the products and the reactions to get to the right state then change the sign on your voltage and add u...

Diego Cortez 2J

http://chemistry.stackexchange.com/ques ... -stability
This helped me understand it. Hope it helps!

Diego Cortez 2J

To add on to this, you can tell mostly because the Newman projection gives you the 2-D image looking along the C-C bond - think of it as facing C1 head-on so that C2 is perfectly behind it. Staggered and eclipsed just refer to the positions of the hydrogens in this radial image - staggered means th...

Diego Cortez 2J

Caleb Lim 2M wrote:How do we know in what order we should put the numbers? (because we can start counting from either side of the molecule)

You number the substituents based off the lowest number/location on the parent chain.

Diego Cortez 2J

Hue_Vo_1D wrote:
Hue_Vo_1D wrote:
Diego Cortez 2J wrote:I balanced the equation, but I'm still confused on how to get the moles.

Use stoichiometry.
2220 kJ/1 mol=2580 kJ/X mol

Solve for X

Thanks

Diego Cortez 2J

Can someone show me the setup for #6? Please and thank you! -Write out the equation for the combustion of propane and make sure to balance the eqn. -From the given standard enthalpy of combustion (kJ/mol), figure out how many moles of propane is burned in order to release 2580. kJ of heat.(use stoi...

Diego Cortez 2J

Can someone show me the setup for #6? Please and thank you!

Diego Cortez 2J

Wednesday, November 2, 6-8 PM

Diego Cortez 2J

Is anyone actually going to meet? If so please post the time on here! I live in Birch and would really like to study with others.

CHEMISTRY COMMUNITY

Search found 17 matches

Re: Post All Chemistry Jokes Here

Re: Root naming

Re: De Neve Study Group

Re: Quiz 2 question

Re: Cyclohexene example in course reader [ENDORSED]

Re: Final

Re: Saying Thank You to Dr. Lavelle

Re: Memorizing Relative Energies

Re: 2013 Final Q3 Part A

Re: Thermodynamically/ kinetically stable

Re: How to tell whether a molecule is eclipsed or staggered by looking at the 2D repersentation?

Re: Naming [ENDORSED]

Re: Quiz 1 Preparation Answers

Re: Quiz 1 Preparation Answers

Re: Quiz 1 Preparation Answers

Re: Midterm

Re: De Neve Study Group