[ovenmits]

I have a HW problem I am looking for assistance on...

In part A of the problem, I found that the partial derivative of internal energy with respect to volume at constant temperature (dU/dV)_T = T (dP/dT) - P = 0  by using the equation of state P(V_m - b) = RT.

In part B of the problem, they want me to use those results to prove (T_2 / T_1)^(3/2) = V_m1 - b / V_m2 - b for the same equation of state ( P(V_m - b) = RT )

I don't even know how to begin part two.  I know that for a monoatomic gas, Cv = 3/2 R, but im not sure what kind of starting point that is.

Thanks!