Search found 19 matches
- Fri Mar 17, 2017 9:33 pm
- Forum: Balancing Redox Reactions
- Topic: How to determine Galvanic Cell molecules
- Replies: 2
- Views: 433
How to determine Galvanic Cell molecules
How would you tell which molecules would produce the highest possible voltage? For example, why is Zn(NO3)2 good for this but Cu(NO3)2 is not?
- Tue Mar 14, 2017 6:27 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Derivations
- Replies: 4
- Views: 706
Derivations
Should we be familiar with the derivations listed in the chapter summaries or should we be familiar with all the derivations (i.e Electrochemistry derivations?)
- Mon Mar 06, 2017 11:11 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 20531
Re: Quiz 3 Winter 2017
Would vinyls be considered functional groups and therefor we don't need to know it for Quiz 3?
- Sun Mar 05, 2017 10:37 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 20531
Re: Quiz 3 Winter 2017
Will the quiz focus more on kinetics or organic chemistry?
- Sun Feb 19, 2017 11:06 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: UA hours
- Replies: 1
- Views: 249
UA hours
Will there be UA hours tomorrow?
- Sat Feb 11, 2017 12:11 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Work [ENDORSED]
- Replies: 1
- Views: 349
Work [ENDORSED]
When work is positive, do the surroundings do work on the system or does the system do work on the surroundings?
- Sun Feb 05, 2017 9:26 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Quiz 1
- Replies: 4
- Views: 808
Quiz 1
Is Quiz one going to be curved?
- Mon Jan 23, 2017 2:02 pm
- Forum: Phase Changes & Related Calculations
- Topic: Question about 8.21
- Replies: 1
- Views: 302
Question about 8.21
I just have a quick question about 8.21 which is "A piece of copper of mass 20.0 g at 100.0 C is placed in a vessel of negligible heat capacity but containing 50.7 g of water at 22.0 C. Calculate the nal temperature of the water. Assume that no energy is lost to the surroundings." Why does...
- Sun Jan 22, 2017 2:46 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Unit Question [ENDORSED]
- Replies: 4
- Views: 578
Unit Question [ENDORSED]
In some of the textbook questions, I end up getting L*atm and the answer in the book is in J. What are the units that pressure and volume need to be in for the work equation?
- Thu Jan 19, 2017 12:58 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 1
- Views: 268
Final
Are there going to be derivations on the final this quarter?
- Sun Jan 15, 2017 6:57 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 8.55 question
- Replies: 1
- Views: 248
8.55 question
The question is: Barium metal is produced by the reaction of aluminum metal with barium oxide. From the standard reaction enthalpies, 2 ba (s) + O2(g) produces 2BaO(s) with delta H= -1107 kJ 2Al(s) +O2 produces Al2O3(s) with delta H= -1676 kj calculate the reaction enthalpy for the produces Al2O3 (s...
- Fri Dec 02, 2016 10:12 am
- Forum: DeBroglie Equation
- Topic: Question about Q2A. on 2013 practice final
- Replies: 1
- Views: 418
Question about Q2A. on 2013 practice final
Question: An electron was ejected from a sodium mental surface with light of a given frequency. If the wavelength of the ejected electron is 1.1 nm, what is the frequency of the incident light? The work function of sodium is 150.6 kj.mol. How do you know that you're supposed to use De Broglie equati...
- Sat Nov 19, 2016 5:53 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Problem 11.67
- Replies: 1
- Views: 348
Problem 11.67
I know someone else posted about this problem but it wasn't entirely answered. Here is the problem: The reaction 2 HCl(g) ∆ H2(g) Cl2(g) has K 3.2 10 34 at 298 K. The initial partial pressures are H2, 1.0 bar; HCl, 2.0 bar; and Cl2, 3.0 bar. At equilibrium there is 1.0 mol H2(g). What is the volume ...
- Sun Nov 06, 2016 6:39 pm
- Forum: General Science Questions
- Topic: Interesting Change in Units
- Replies: 1
- Views: 694
- Tue Oct 25, 2016 6:13 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Good Visual
- Replies: 2
- Views: 462
Good Visual
I found a website with some good visiuals of orbitals! It seems childish but I think its very helpful
https://www.learner.org/interactives/periodic/building/
https://www.learner.org/interactives/periodic/building/
- Wed Oct 19, 2016 10:36 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: General Question [ENDORSED]
- Replies: 2
- Views: 465
General Question [ENDORSED]
Can someone explain what Zeff is? It appears in some of the chapter 2 problems.
- Thu Oct 06, 2016 12:40 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Homework problem 1.69 [ENDORSED]
- Replies: 1
- Views: 351
Homework problem 1.69 [ENDORSED]
1.69 In a recent suspense film, two secret agents must penetrate a criminal’s stronghold monitored by a lithium photomultiplier cell that is continually bathed in light from a laser. If the beam of light is broken, an alarm sounds. The agents want to use a handheld laser to illuminate the cell while...
- Sat Oct 01, 2016 3:16 pm
- Forum: Properties of Light
- Topic: 1.13 on practice problems.
- Replies: 1
- Views: 255
1.13 on practice problems.
How do we do this problem without the Rydberg formula?
- Wed Sep 28, 2016 7:46 pm
- Forum: Properties of Light
- Topic: Speed of radiation
- Replies: 2
- Views: 434
Speed of radiation
Is speed of light the same as the speed of radiation?