Recent content by smithnh

Homework Statement A sample of 2.5 mol O2 (Cp,m = 29.355 J K-1 mol-1) is originally confined in 23 dm3 at 270 K and then undergoes adiabatic expansion against a constant pressure of 600 Torr until the volume has increased by a factor of 3.0. Calculate q, w, ΔU, ΔT, and ΔH. (The final...

What I needed to think about was the fact that the battery cannot suplicate more charge thus Q is constant. After realizing that sigma_0 is defined as Q/A that then brought to question how I was thinking about the electric ield and was able to figure the answer.

[SOLVED] Capacitor problem Problem: A parallel plate capacitor with adjustible plate separation d and adjustible area A is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V Volts. (C is the capacitance and U is the stored energy.) Give all correct answers...

Thanks for the help.

I was browsing the internet looking for alternate proofs to why the electric field produced by an infinite sheet was equal to the charge density divided by twice the space permitivity constant. However, in my search I came across a proof that confused me at this link...

Thanks for the help.

[SOLVED] Electric Field Produced by a Ring 1. Homework Statement A uniform circular ring of charge Q=5.60microCoulombs and radius R=1.30 cm is located in the x-y plane, centered on the origin as shown in the figure. If z is much smaller than R then E is proportional to z. (You should...

Thanks for your help, I see now that the electrons can move into the ring without breaking the phenyls aromaticity.

I have a better idea, go to this link (It's the first part of problem 2) http://orgchem.colorado.edu/courses/imagesbhS08/HW1_3331sp08.pdf" What I tried to do was first remove an H+ from the alcohol but it does not have any resonance contributors, then I tried to remove an H+ from the...

[SOLVED] Resonance Structures 1. Homework Statement [/b] Draw the major resonance contributors that show electron delocaliztion of the formal charge for the following ions, The conjugate base of .O .||... NH2 /..\ /...\\ / ...||...| ... \...//\ ....OH 3. The Attempt at a...

Thank you in advance... 1. Homework Statement Suppose a power plant delivers energy at 918MW using steam turbines. The steam goes into the turbines superheated at 626K and deposits its unused heat in river water at 286K. Assume that the turbine operates as an ideal Carnot engine. If the...