Search found 25 matches
- Sun Mar 19, 2017 1:12 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Closed system and Midterm
- Replies: 3
- Views: 889
Re: Closed system and Midterm
Closed system just means that energy can be added/removed, and this can happen by heating or compression. So yes. In an open system, on the other hand, matter can be added/removed as well as energy.
- Sat Mar 18, 2017 7:22 pm
- Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
- Topic: Memorize C-H torsional strain values?
- Replies: 2
- Views: 1581
Memorize C-H torsional strain values?
Anyone know if we will be expected to calculate the K from the difference in gibbs free energy of two conformations? And if so, do we have to memorize that a C-H eclipsed pair adds around 4KJ of energy?
- Thu Mar 16, 2017 4:40 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 569824
Re: Saying Thank You to Dr. Lavelle
Thank you Dr. Lavelle! It seems rare to have such a genuine professor who cares so much about the success of his students. I really appreciate how much time you spent to put together all of the resources you gave to us these past two quarters.
- Tue Mar 14, 2017 6:38 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Derivations
- Replies: 4
- Views: 1065
Re: Derivations
I believe any derivation covered in class is fair game on the final
- Tue Mar 14, 2017 6:36 pm
- Forum: *Alkenes
- Topic: Naming every alkene as cis or trans
- Replies: 1
- Views: 1407
Naming every alkene as cis or trans
From now on when naming a structure, do we have to name every alkene as cis or trans?
- Sat Mar 04, 2017 11:26 am
- Forum: *Alkenes
- Topic: Naming what carbon the double/triple bond is on?
- Replies: 2
- Views: 651
Naming what carbon the double/triple bond is on?
For naming, do we have to number which double bond the carbon is on?
e.g: 2-pentene (if the double bond was on the second carbon)
e.g: 2-pentene (if the double bond was on the second carbon)
- Fri Mar 03, 2017 5:34 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 29793
Re: Quiz 3 Winter 2017
Do we have to memorize all of the common names for substituent naming thats in the course reader?
- Mon Feb 20, 2017 5:01 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 2 Winter 2017
- Replies: 160
- Views: 24932
Re: Quiz 2 Winter 2017
Can someone explain why question 10 is false? I thought half-lives are always the same.
- Sun Feb 19, 2017 10:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 2 Winter 2017
- Replies: 160
- Views: 24932
Re: Quiz 2 Winter 2017
Will we have to derive equations for quiz 2?
- Sun Feb 12, 2017 10:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3649044
Re: Post All Chemistry Jokes Here
A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."
- Sat Feb 04, 2017 11:26 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3649044
Re: Post All Chemistry Jokes Here
Thermodynamics is a funny subject. The first time you go through it, you don't understand it at all. The second time you go through it, you think you understand it, except for one or two small points. The third time you go through it, you know you don't understand it, but by that time you are so use...
- Thu Jan 26, 2017 6:59 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Min Temp at G=0?
- Replies: 1
- Views: 435
Min Temp at G=0?
Why is the minimum temperature of a reaction when G=0?
- Thu Jan 19, 2017 2:08 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Cpm vs Cvm [ENDORSED]
- Replies: 1
- Views: 6081
Cpm vs Cvm [ENDORSED]
Why does molar heat capacity at a constant volume always yield a greater amount of temperature change than molar heat capacity at a constant pressure? Also why does heat capacity increase with complexity of a molecule??
- Tue Jan 17, 2017 11:54 am
- Forum: General Science Questions
- Topic: 2 different R constants?
- Replies: 2
- Views: 1219
2 different R constants?
Can someone explain to me why there are two different R constants? One that is .0821 & the other that is 8.3145. I'm very confused on how you know when to use each one when there is an R in the equation
- Sat Dec 03, 2016 8:19 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: copper anion/cation e configuration
- Replies: 1
- Views: 622
copper anion/cation e configuration
When writing out the e- configuration anions/cations of exceptions like copper (Cu+), would it be 3d^5 or 3d^34s^2?
- Wed Nov 30, 2016 7:02 pm
- Forum: Conjugate Acids & Bases
- Topic: Conjugate bases/acids that change the pH
- Replies: 1
- Views: 582
Conjugate bases/acids that change the pH
Which conjugate acids/bases affect the pH of a reaction?
- Thu Nov 24, 2016 7:48 pm
- Forum: Conjugate Acids & Bases
- Topic: General Rule for Anion Stability? [ENDORSED]
- Replies: 1
- Views: 581
General Rule for Anion Stability? [ENDORSED]
To determine what is more acidic by looking at anion stability, what atoms have to be more electronegative? or do all of the atoms have to be the same except for one?
- Mon Nov 14, 2016 6:53 pm
- Forum: Ideal Gases
- Topic: ΔH?
- Replies: 2
- Views: 726
ΔH?
Does ΔH tell you whether or not a reaction is endo/exothermic? If so, does a positive ΔH mean endo or exothermic? Also, will we have to know about endothermic/endothermic rxns for the quiz? (Specifically questions like Fall 2014 #6)
- Tue Nov 08, 2016 10:21 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Heteronuclear Molecular Orbital Diagram
- Replies: 1
- Views: 585
Heteronuclear Molecular Orbital Diagram
If both Atom A and Atom B are Z>8, but they are heteronuclear, which diagram do you use? In the course reader, it says that "Heteronuclear with Z mixed use the z<8 diagram". However, I am not sure if he means you use that diagram only if one atom >8 and one is <8, or if you always use that...
- Sat Nov 05, 2016 7:36 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Memorizing Ligands?
- Replies: 2
- Views: 742
Memorizing Ligands?
Anyone know if we have to memorize all of the ligands on page 117 of the course reader? If not all, which ones?
- Sat Oct 29, 2016 10:47 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3649044
Re: Post All Chemistry Jokes Here
Don't trust atoms... They make up everything... :/
- Fri Oct 21, 2016 7:20 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3649044
Re: Post All Chemistry Jokes Here
- chemistry joke.jpg (10.42 KiB) Viewed 33994 times
- chemistry joke.jpg (10.42 KiB) Viewed 33994 times
- chemistry joke.jpg (10.42 KiB) Viewed 33994 times
- chemistry joke.jpg (10.42 KiB) Viewed 33994 times
- Sat Oct 15, 2016 3:54 pm
- Forum: Student Social/Study Group
- Topic: Rieber Hall 14A Study Group (Fall 2016)
- Replies: 49
- Views: 10156
Re: Rieber Hall 14A Study Group (Fall 2016)
Hi! I live in rieber too and am interested in joining!
- Mon Oct 03, 2016 7:45 pm
- Forum: SI Units, Unit Conversions
- Topic: Conversions [ENDORSED]
- Replies: 8
- Views: 1746
Re: Conversions [ENDORSED]
What is the conversion from Kev to J?
- Wed Sep 28, 2016 7:38 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Peer Facilitated Learning Sessions
- Replies: 32
- Views: 13424
Re: Peer Facilitated Learning Sessions
Since all of the sessions in week 1 are on the same topic, is it suggested that we only go to one a week? Or will it be beneficial to go to more than one?