Recent content by 8008jsmith

Please see the attached picture. I'm not sure which hydrogen would be anti-periplanar. Any help would be appreciated. Thanks!

I had the right formula, I was just using it wrong. For anyone's future reference: Take the log of the rate ratio and then solve for ΔG of each activation energy you need. To get the reverse just add the energy of the products to each reaction energy you're trying to find. Therefore: log...

Homework Statement I had a lab where we used Helmholtz coils to measure the period of a bar magnet (1/s2) vs output current. The graph of this is a straight line. Using the slope, I am supposed to be able to derive the C constant and then that divided by the intercept is supposed to yield the...

Homework Statement The standard free energy of activation of a reaction A is 83.7 kJ/mol at 298K. Reaction B is 10 million times faster at the same temperature. The products of each reaction are 10 kJ/mol more stable than the reactants. (a) What is the standard free energy of activation of...

Well when I do the math I get Q = 29.34. Then I plug that into 1/2 (Q^2/C1) and I get 64.24 for the stored energy of the series capacitor. Then the difference between the two is 207.15 but the correct answer is 176.42.

I'm not really sure what equation I could use. But I know in series the charge in each would be the same which is why I used the equivalent capacitance to find the charge using Q=CV.

I wasn't given the voltage across each, just the voltage of the battery. For a series I found the equivalent capacitance using (1/C1 + 1/Cn)^-1. And then I plugged that into the Q = CeqV equation to find Q. Then I used Q in the stored energy equation with C1. I hope that made sense.

Homework Statement Three capacitors of C1 = 6.7 micro-farads, C2 = 19.4 microfarads, and C3 = 9.3 microfarads are all connected in series to a 9 volt battery. The stored energy in C1 is found (U1s). The same three capacitors are connected in parallel to the same battery. The stored energy in...

Homework Statement A uniform electric field of 16.9 N/C is directed in the positive x direction. If a charge of -2 micro-coulombs moves 2.2 meters in the negative x direction, how much does the electric potential energy change in micro-joules? Homework Equations ΔEPE = qEd The Attempt at a...

Actually it was 5-chloro-1,4-dimethylcyclohexene. I made the dumb mistake of putting 5-chloro-1,4-dimethyl-cyclohexene before, which is why it was wrong. This website: http://www.vanderbilt.edu/AnS/Chemistry/Rizzo/chem220a/alkenes.pdf is a good resource for this if anyone has similar questions...

Homework Statement http://postimg.org/image/t2uxlnsdh/ What is the IUPAC name of this compound? 2. The attempt at a solution I have tried: 5-chloro-1,4-dimethyl-cyclohexene, 4-chloro-2,5-dimethyl-cyclohex-1-ene, and 5-chloro-1,4-dimethyl-cyclohex-1-ene

Homework Statement https://s.yimg.com/hd/answers/i/582779fb3e0b4cecab74f7adb74ed84e_A.png?a=answers&mr=0&x=1422153107&s=7d575e72049bd930d0e263cbd57eff58 The Attempt at a Solution I have attempted to solve it. But I don't know what I'm doing wrong.

Thank you for your response. It is a physical chemistry question. You are correct in your interpretation. I don't think the Young's modulus equation can be applicable since it is a muscle in the question not a metal. Is it safe to assume the cross sectional number was just put into throw me off...

w is work, k is a constant, x2 is the final length, x0 is the spring at equilibrium, x1 is the initial spring length. I assumed x1 and x0 to be the same values when solving for k.

Homework Statement A muscle of 1 cm^2 cross section and 10 cm length is stretched to 11 cm by hanging a mass on it. The muscle behaves like a spring that follows Hooke's law. The Hooke's law constant for the muscle was determined by finding that the muscle exerts a force of 5 N when it is...