Search found 16 matches

by 904826427
Tue Mar 14, 2017 4:25 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Axial and Equatorial Bonds
Replies: 1
Views: 301

Re: Axial and Equatorial Bonds

Equatorial bonds are perpendicular to the ring, whereas axial bonds are parallel.

Hope that helps!
by 904826427
Tue Mar 14, 2017 4:16 pm
Forum: *Ethers
Topic: Ethyl methyl ether?
Replies: 3
Views: 1160

Re: Ethyl methyl ether?

An ether is an oxygen bonded to two carbon chains. In the common name of ethyl methyl ether, it is specified that the two carbon chains would be an ethyl group and a methyl group. So it would be a methane, attached to an oxygen, attached to an ethane. See the google images results for ethyl methyl ...
by 904826427
Wed Mar 08, 2017 11:57 pm
Forum: *Ethers
Topic: Introduction to Organic Chemistry Textbook Page 69
Replies: 3
Views: 657

Re: Introduction to Organic Chemistry Textbook Page 69

Jose_Arambulo_2I wrote:That is because there are two methyl groups, one attached to carbon 1 and the other attached to carbon 2.


Ok but for C-O-C-C-O-C which one is 1 and 2 here?
by 904826427
Tue Mar 07, 2017 7:17 pm
Forum: *Ethers
Topic: Introduction to Organic Chemistry Textbook Page 69
Replies: 3
Views: 657

Introduction to Organic Chemistry Textbook Page 69

On page 69, there exists a 1,2-Dimethoxyethane.

Why is there a 1,2?
by 904826427
Wed Mar 01, 2017 5:05 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Naming Organic Molecules
Replies: 19
Views: 2097

Re: Naming Organic Molecules

Does anyone have any tips for naming complex organic compounds/molecules? Do we just need to memorize them or is there a better method? Thank you in advance! Well, the first four types of alkyl groups (methyl, ethyl, propyl, butyl) are all you really need to learn to memorize right now because the ...
by 904826427
Wed Feb 22, 2017 11:06 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: First order, second order reactions [ENDORSED]
Replies: 6
Views: 860

Re: First order, second order reactions [ENDORSED]

Daisy Palomera 3B wrote:Would one of the ways to determine the rate law, if it is not given, be to use initial rates?


I don't see why not
by 904826427
Tue Feb 14, 2017 7:49 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Calculating delta H of a reaction
Replies: 2
Views: 378

Re: Calculating delta H of a reaction

Jessica Chern 1H wrote:That's because the enthalpy of formation for elements in their most stable form equals 0. O2 is the most stable form for oxygen.



Is that also with entropy and gibbs?
by 904826427
Tue Feb 14, 2017 7:42 pm
Forum: Phase Changes & Related Calculations
Topic: Change in internal energy= 0
Replies: 4
Views: 459

Re: Change in internal energy= 0

904826427 wrote:
Sakina_Qadir_3K wrote:One of the conditions when internal energy is zero is when the system has no temperature change, more specifically when the question says "isothermal".


But can't work still occur, so the internal energy would not be zero?



Ah, so isothermal means deltaU=0 and adiabatic means q=0
by 904826427
Tue Feb 14, 2017 7:34 pm
Forum: Phase Changes & Related Calculations
Topic: Change in internal energy= 0
Replies: 4
Views: 459

Re: Change in internal energy= 0

Sakina_Qadir_3K wrote:One of the conditions when internal energy is zero is when the system has no temperature change, more specifically when the question says "isothermal".


But can't work still occur, so the internal energy would not be zero?
by 904826427
Mon Feb 13, 2017 10:06 pm
Forum: Balancing Redox Reactions
Topic: Oxidation Number of Diatomic Oxygen
Replies: 2
Views: 540

Re: Oxidation Number of Diatomic Oxygen

O2 is in its most stable form as well, so know that the enthalpy of formation for O2 is also zero.
by 904826427
Sat Feb 11, 2017 4:44 pm
Forum: Phase Changes & Related Calculations
Topic: Quiz 1 Answers
Replies: 2
Views: 432

Quiz 1 Answers

Is the quiz answers for Winter 2017 up?
by 904826427
Mon Feb 06, 2017 10:26 pm
Forum: Balancing Redox Reactions
Topic: How many electons needed for 2H+ + 2e- -> H2?
Replies: 2
Views: 579

Re: How many electons needed for 2H+ + 2e- -> H2?

2H+ +2e- --> H2 can simply be reduced to H+ +e- ---> H
This would make it n=1
by 904826427
Tue Jan 31, 2017 1:02 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 14121

Re: Quiz 1 Preparation Answers

ariana_cruz_1C wrote:Can someone explain why in #11 does q go from -23.8 to 23.8?


You cannot have negative mass so it's in thermodynamics that when it is transferred the energy is now positive
by 904826427
Thu Jan 26, 2017 12:46 pm
Forum: Phase Changes & Related Calculations
Topic: Homework Question 8.67
Replies: 3
Views: 344

Re: Homework Question 8.67

Odds are he would give the equation but you should be able to do it on your own
by 904826427
Sat Jan 21, 2017 12:11 pm
Forum: Phase Changes & Related Calculations
Topic: Derivations
Replies: 21
Views: 2203

Re: Derivations

My TA said things like derivatives and integrals are highly unlikely to be tested on since many people are not taking a calculus based math class.

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