Search found 11 matches
- Sat Mar 14, 2015 5:47 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: How to draw curved arrows?
- Replies: 6
- Views: 6079
Re: How to draw curved arrows?
The tail of the arrow is from the the source of the electron and the arrow goes to where the election goes. For example in step 1 of q6, the electron source is the bond between N and H. The electrons go to the N and leaves the H with no electrons. However, I am confused about step 3. The arrows show...
- Sat Mar 14, 2015 1:46 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs as a State Function
- Replies: 1
- Views: 900
Gibbs as a State Function
In 2013 Final Q2A, I know you can add the gibbs free energy because it's a state function. We were given:
NADH > NAD+ + H+ + 2e- deltaG is -158.3KJ.
However why did this energy change to -158.2 KJ in the calculations? Was this just a typo?
NADH > NAD+ + H+ + 2e- deltaG is -158.3KJ.
However why did this energy change to -158.2 KJ in the calculations? Was this just a typo?
- Sat Mar 14, 2015 1:29 am
- Forum: *Cycloalkenes
- Topic: Final 2012 Q5: configuration of a cyclooctenone
- Replies: 6
- Views: 1736
Re: Final 2012 Q5
Never mind, I miss read the post; it only said "Cyclopropene, cyclobutene, cyclopentene, cyclohexene"
However, I'm still a little confused on how to determine cis or trans when theres no 3D model, like in this question for Q5 on 2012 final.
However, I'm still a little confused on how to determine cis or trans when theres no 3D model, like in this question for Q5 on 2012 final.
- Sat Mar 14, 2015 1:24 am
- Forum: *Cycloalkenes
- Topic: Final 2012 Q5: configuration of a cyclooctenone
- Replies: 6
- Views: 1736
Re: Final 2012 Q5
Shouldn't this molecule be cis no matter what? Because if the double bond was trans, this molecule wouldn't be possible as stated on a similar question on this post: https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=86&t=3763"onclick="window.open(this.href);return false; And because this molec...
- Fri Mar 13, 2015 11:21 pm
- Forum: *Alkanes
- Topic: Molecular Formula
- Replies: 1
- Views: 531
Molecular Formula
I was wondering in problem 8D of 2011 Final, theres a Newman projection of 1-chloro-5fluorohexane. One of the molecular formulas in the anti position is CFHCH3. Would it be wrong if I wrote CHCH3F or CHFCH3? How do you know the order to write the atoms?
- Tue Feb 10, 2015 1:06 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: When to use Cv vs Cp
- Replies: 6
- Views: 1501
Re: When to use Cv vs Cp
Someone answer this please.
- Tue Feb 10, 2015 9:15 am
- Forum: Phase Changes & Related Calculations
- Topic: State Functions
- Replies: 4
- Views: 1013
Re: State Functions
Sorry, I have an older course reader. Maybe it was a typo.
- Mon Feb 09, 2015 9:36 pm
- Forum: Phase Changes & Related Calculations
- Topic: State Functions
- Replies: 4
- Views: 1013
Re: State Functions
Thanks, I was a little confused because on the first page of thermochemistry in the course reader, it said E is a state function.
- Mon Feb 09, 2015 8:00 pm
- Forum: Phase Changes & Related Calculations
- Topic: State Functions
- Replies: 4
- Views: 1013
State Functions
In the practice midterm of 2014 5C, the answers say that E is a path function, not a state function.
Why? I thought E was a state function.
Why? I thought E was a state function.
- Fri Jan 23, 2015 8:06 pm
- Forum: Phase Changes & Related Calculations
- Topic: Work
- Replies: 2
- Views: 879
Work
Question #3 in workbook Consider a gas at an initial pressure of 5.0 atm and an initial volume of 1.0 L that undergoes a change to 2.0 atm and 4.0 L by two different pathways. The gas is at 298 K. Pathway 1: P1 = 5.0 atm P2 = 5.0 atm P3 = 2.0 atm V1 = 1.0 L V2 = 4.0 L V3 = 4.0 L Pathway 2: P1 = 5.0 ...
- Tue Dec 09, 2014 8:36 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3660121
Re: Chemistry Jokes
Did you hear oxygen went on a date with potassium?
It went OK.
It went OK.