Search found 15 matches
- Fri Mar 10, 2017 9:20 pm
- Forum: Student Social/Study Group
- Topic: Chem 14BL Lec 1 Lab Switch
- Replies: 1
- Views: 628
Re: Chem 14BL Lec 1 Lab Switch
Would anyone enrolled in Lab 1A (Tues 8-10:50am), 1B (Tues 11am-1:50pm), or 1M/N (both on Fri 8-10:50am) be willing to switch labs with me? I'm currently enrolled in Lab 1I (Thurs 2-4:50pm) but have a schedule conflict. Please let me know! Hey i can switch with you. My email is csebastiani115@aol.com
- Mon Mar 06, 2017 7:00 pm
- Forum: *Cycloalkanes
- Topic: Numbering of Substituents [ENDORSED]
- Replies: 8
- Views: 2845
Re: Numbering of Substituents [ENDORSED]
If numbering order doesn't matter, then how is 1-ETHYL-3-Methyl-4-PROPYLCYCLOHEXANE wrong as opposed to 4-ETHYL-2-METHYL-1-PROPYLCYCLOHEXANE? Do you have to add all the numbers up and see which one gives the lowest? No you don't add them up. They both have 1 as being the lowest value so then you lo...
- Thu Feb 23, 2017 10:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Organic Chem [ENDORSED]
- Replies: 2
- Views: 545
Re: Organic Chem [ENDORSED]
Alright awesome. Thank you!
- Thu Feb 23, 2017 3:45 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Organic Chem [ENDORSED]
- Replies: 2
- Views: 545
Organic Chem [ENDORSED]
Why are we starting in chapter 4 of the organic textbook?
- Sun Feb 19, 2017 9:23 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Power issues
- Replies: 2
- Views: 542
Power issues
Hey so when i did question 15.19 i got all of the correct answers except for the k value. The number in the solutions is 2.85x10^-12 but i got 2.85 and I'm not sure how. Can somebody show me what they plugged in to get k to see where my mistake is because i don't have a solution manual?
- Tue Feb 14, 2017 10:02 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Ch 8 Exercise 41
- Replies: 1
- Views: 388
Re: Ch 8 Exercise 41
They are set equal to each other because the heat lost by the water goes to the ice. Also i think they are equal to each other with a negative sign like this -q(ice)=q(water)
- Wed Feb 08, 2017 10:30 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: HW 14.9
- Replies: 3
- Views: 521
Re: HW 14.9
Evelin Escobedo wrote:Can someone also go over how to use the equation to get gibbs free energy in this example?
n is the moles of e that is transferred and by balancing the reaction in part a we get that n=2 and then F is faradays constant and Ecell is given so you plug in those three to get dG for the reaction
- Sun Feb 05, 2017 4:49 pm
- Forum: Balancing Redox Reactions
- Topic: 14.17
- Replies: 2
- Views: 527
14.17
14.17 (a) Write balanced half-reactions for the redox reaction of an acidi ed solution of potassium permanganate and iron(II) chloride. (b) Write the balanced equation for the cell reaction and devise a galvanic cell to study the reaction (write its cell diagram). Can anybody help me out with this q...
- Sun Jan 29, 2017 7:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1 Preparation Answers
- Replies: 130
- Views: 25169
Re: Quiz 1 Preparation Answers
Why doesn't process 1 in #7 lead to an increase in entropy?
- Fri Jan 27, 2017 10:59 am
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Quiz Solutions?
- Replies: 1
- Views: 394
Quiz Solutions?
Are there solutions to the practice quizzes in the course reader, or anywhere else?
- Wed Jan 25, 2017 10:23 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: 9.13
- Replies: 5
- Views: 1103
9.13
During the test of an internal combustion engine, 3.00 L of nitrogen gas at 18.5 C was compressed suddenly (and irreversibly) to 0.500 L by driving in a piston. In the process, the temperature of the gas increased to 28.1 C. Assume ideal behavior. What is the change in entropy of the gas? Anybody he...
- Wed Jan 18, 2017 9:22 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: #8.85
- Replies: 1
- Views: 547
#8.85
N2 + O2 --> 2NO dH° 180.6 kJ (b) How much heat is absorbed in the oxidation of 5.45 L of nitrogen measured at 1.00 atm and 273 K? (c) When the oxidation of N2 to NO was completed in a bomb calorimeter, the heat absorbed was measured as 492 J. What mass of nitrogen gas was oxidized? Can anybody help ...
- Tue Jan 17, 2017 7:15 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 8.65
- Replies: 2
- Views: 1296
Re: 8.65
Awesome. Thank you!
- Tue Jan 17, 2017 1:45 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 8.65
- Replies: 2
- Views: 1296
8.65
Calculate the standard enthalpy of formation of dinitrogen pentoxide from the following data,
2NO(g) + O2(g) -> 2NO2(g) deltaH=-114.1kJ
4NO2(g) + O2(g) -> 2N2O5(g) deltaH=-110.2kJ
and the deltaH for NO is +90.25
How do you go about solving this?
2NO(g) + O2(g) -> 2NO2(g) deltaH=-114.1kJ
4NO2(g) + O2(g) -> 2N2O5(g) deltaH=-110.2kJ
and the deltaH for NO is +90.25
How do you go about solving this?
- Mon Jan 16, 2017 10:51 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Units of Reaction Enthalpies
- Replies: 11
- Views: 2071
Re: Units of Reaction Enthalpies
Only for standard enthalpy of formation is it uniform to use kj/mol but if the also depends on what the question specifies. Its usually kj though