1. The problem statement, all variables and given/known data in a cylinder, 1.2 mol of an ideal gas, gamma = 1.67 initially at 3.60 x10^5 pa and 300k, is compressed until the volume is halved. I need help with 1) c and 2) Compute work done on the gas if the compression is: 1) a) isothermal b) adiabatic c) isobaric 2) in which case is the absolue value of the change in internal energy of the gas the greatest? least? 2. Relevant equations I think i have a and b worked out. 3. The attempt at a solution for c) would this be the correct approach? is this part correct? V1 = ? V2 = 1/2V1 w = p(V2 - V1) w = p(1/2v - v) pv = nrt w = -1/2nrt? 2) greatest is isobaric because? least is isothermal because delta u =0 constant temp and temp is related to change in internal energy.