Recent content by flythisforme

I have a few questions that are similar to each other that I need some serious assistance with. 1. Certain bacteria can convert propylene glycol into pyruvate anaerobically, generating ATP. Using structures and any need cofactors/cosubstrates (NAD+, ATP), devise a pathway for this...

Yeah, but I need the angle there to find the y component of it.

I have a problem where I need to find the net electric field on a point due to 6 charges. I attached the diagram. It is a pentagon of 5 charges with a 6th charge in the center. Each side of the pentagon is 4 mm, and there is a point P on the center of one side. I found that the line from...

I posted my work in a new thread since it is not a small problem anymore.

Having problems with a thermo. cycle! OK, so in the problem A->B is isobaric, B->C is adiabatic, C->D is isothermal, D->A is isochoric. Pa = 2atm, Va = 2 m^3, n = 1mole, Vb = 1/2Va, Pa = 2Pd (That is all the information that is given.) I always end up with the temperatures of B and C...

I'm going to make a new post of this since it's really no longer a "small question."

OK, so in the problem A->B is isobaric, B->C is adiabatic, C->D is isothermal, D->A is isochoric. Pa = 2atm, Va = 2 m^3, n = 1mole, Vb = 1/2Va, Pa = 2Pd I always end up with the temperatures of B and C both equaling 2.44x10^4 K. What am I doing wrong?

In an adiabatic process, I know that that dQ is zero. I am doing a problem with a cycle that has different types of processes, and when I get to the adiabatic leg, I am finding that the change in temperature is zero. Therefore, the work done and the change in internal energy also equal zero...

So it is possible for dU to be zero in an adiabatic process? And then the work would be 0? Because I am getting zero temperature change, and this causes the deltaQ, deltaW, and deltaU to be zero. [EDIT] Maybe I should clarify a bit. I guess what I am asking is that can a process be...

P.S. THANKS for all the help. I'm going to bed now but if you have anymore input I'll definitely check back in the morning. Thanks again!

Okay, so then most definitely the work done and change in internal energy CANNOT be zero? Well I'll have to go through the other parts of the problem again. Hopefully I'll figure out where I went wrong.

a) oh sorry... for copper it is 386 J/kg*K and for lead it is 128 J/kg*K b) yay c) Okay, that makes sense. So I just use that equation for each block and add the two results together. And on the topic of the gases, for another problem there is a cycle (PV-diagram) where I have to...

a) Well, since you said that, is what I showed in my original post correct? b) There is no heat flowing in from the outside. So the change in internal energy would be zero? c) entropy = degree of disorder I have a general equation for change in entropy and then equations for...

(Re-posted) A 50g block of copper having a temperature of 400K is placed in an insulating box with a 100g block of lead having a temperature of 200K. a) What is the equilibrium temperature of this two-block system? b) What is the change in the internal energy of the two-block system as it...

I'm just trying to get this thread back up higher since I'm not getting any responses. I still need some help. I'd really appreciate it!