CHEMISTRY COMMUNITY

Teddy_Rosenbluth

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?

Teddy_Rosenbluth

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?)

Teddy_Rosenbluth

Would vinyls be considered functional groups and therefor we don't need to know it for Quiz 3?

Teddy_Rosenbluth

Will the quiz focus more on kinetics or organic chemistry?

Teddy_Rosenbluth

Will there be UA hours tomorrow?

Teddy_Rosenbluth

When work is positive, do the surroundings do work on the system or does the system do work on the surroundings?

Teddy_Rosenbluth

Is Quiz one going to be curved?

Teddy_Rosenbluth

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...

Teddy_Rosenbluth

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?

Teddy_Rosenbluth

Are there going to be derivations on the final this quarter?

Teddy_Rosenbluth

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...

Teddy_Rosenbluth

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...

Teddy_Rosenbluth

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 ...

Teddy_Rosenbluth

http://www.sciencealert.com/our-units-o ... mitstart=1

The kilogram is changing!

Teddy_Rosenbluth

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/

Teddy_Rosenbluth

Can someone explain what Zeff is? It appears in some of the chapter 2 problems.

Teddy_Rosenbluth

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...

Teddy_Rosenbluth

How do we do this problem without the Rydberg formula?

Teddy_Rosenbluth

Is speed of light the same as the speed of radiation?

CHEMISTRY COMMUNITY

Search found 19 matches

How to determine Galvanic Cell molecules

Derivations

Re: Quiz 3 Winter 2017

Re: Quiz 3 Winter 2017

UA hours

Work [ENDORSED]

Quiz 1

Question about 8.21

Unit Question [ENDORSED]

Final

8.55 question

Question about Q2A. on 2013 practice final

Problem 11.67

Interesting Change in Units

Good Visual

General Question [ENDORSED]

Homework problem 1.69 [ENDORSED]

1.13 on practice problems.

Speed of radiation