1. Sep 4, 2008

### CrazyAmerican

1. The problem statement, all variables and given/known data

10 moles of an ideal gas at 100 atm pressure are expanded isothermally against a constant pressure of 10 atm, to 10 at. calculate Q W deltaU and delta H (Take temp to be T)

2. Relevant equations

PV = nRT
DeltaH = Q (for constant P)
DeltaU = Q-W
U = H+PV
W = Integral(PdV)

3. The attempt at a solution

I wish i knew where to start...
Isothermal means a constant pressure, in this case 10 atm. ...i just have no idea.

PV = nRT
V1 = .8314T
V2 = 8.314T

W= Integral(PdV)
W = PIntegral(dv)
W = P(v2-v1)
W = 74.826

Got IT!

Last edited: Sep 4, 2008