Problem 3: A substance undergoes an isothermal path from initial state (P1,V1), to final state (P2,V2), where V is molar volume, along which the isothermal compressibility a. Starting with the definition of , show that the process' isothermal path is described by: V=A(T)exp(P) b. Determine the exact expression which gives the isothermal work done on 1mol of this constant- substance along the considered path