## Search found 10 matches

Mon Mar 20, 2017 2:26 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: When to Determine Chair Conformation
Replies: 3
Views: 948

### Re: When to Determine Chair Conformation

It will normally be stated in the question, otherwise, all forms of confirmation will be given credits.
Wed Feb 22, 2017 4:24 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Enthalpy
Replies: 1
Views: 342

### Re: Enthalpy

Tl;dr: Latent heat.

When you vaporize liquid water to gaseous water, they can both stay at 100 C but the gaseous water has more enthalpy because of its form. So there can be heat flow(which is change in enthalpy) although there is no temperature change.
Wed Feb 15, 2017 11:56 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: If gibbs free energy of formation for water is negative, why is the formation of water not spontaneous?
Replies: 2
Views: 628

### If gibbs free energy of formation for water is negative, why is the formation of water not spontaneous?

Delta G of formation of water is -237 kJ/mol, so why doesn't H2 and O2 form water in room temperature?
Mon Feb 13, 2017 2:36 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: What is n? [ENDORSED]
Replies: 8
Views: 1039

### Re: What is n?[ENDORSED]

Correct me if I am wrong, but I think n always stands for number of moles right?
Fri Feb 10, 2017 12:50 am
Forum: Balancing Redox Reactions
Topic: Reduction and Oxidation [ENDORSED]
Replies: 6
Views: 614

### Re: Reduction and Oxidation[ENDORSED]

Easy way for me to remember is "LEO says GER." The lion's name is Leo and it says GER.

LEO - Losing Electron Oxidization
GER - Gain Electron Reduction
Sat Feb 04, 2017 11:25 am
Forum: Administrative Questions and Class Announcements
Topic: Bruincast Audio Problem
Replies: 16
Views: 1927

### Re: Bruincast Audio Problem

404639305 wrote:I've downloaded silverlight multiple times for chrome and it never works, so I think the best option is Safari.

Chrome does not support Sliver Light, so you would have to use safari.
Thu Jan 26, 2017 5:26 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: HW 9.37A
Replies: 2
Views: 321

### Re: HW 9.37A

They are the same thing. So, you can just do the first one to save time and effort.
Thu Jan 19, 2017 8:48 pm
Forum: General Science Questions
Topic: Conservation of Energy Question
Replies: 1
Views: 370

### Conservation of Energy Question

In a completely closed (no energy transfer with outside at all) system, a bomb is placed in it. We weigh the system as a whole and, let's say, it is 300 grams. Will the weight of the system remain the same if the bomb explodes in this closed system? Since mass is a form of energy (E=mc 2 ) and heat ...
Wed Jan 18, 2017 2:45 pm
Forum: Administrative Questions and Class Announcements
Topic: How does the points associated with the online forum work?
Replies: 1
Views: 258

### How does the points associated with the online forum work?

New to Dr. Laurence Lavelle's class. In the syllabus, there are 10 points attributed to the weekly online discussion. How do you get them? Is there a guideline on that? Thanks
Fri Jan 13, 2017 11:28 am
Forum: Phase Changes & Related Calculations
Topic: Phase change
Replies: 3
Views: 437

### Re: Phase change

One more thing to add, the word latent heat also refers to the change of the state of the matter without any change to temperature. So, if that word appears, it is dealing with phase change.