Hello My question is attached to this post ("Question") along with relevant equations I use. ("Image1" "Image2") This is my attempted method. First Law of thermodynamics --> DU = Q - W --> Adiabatic Process so Q = 0 --> DU = -W W = ∫ P Dv Using the upper limit V2 Lower limit V1... I obtain V1 by using the ideal gas law I obtain V2 by using the equation in "Image 1" To solve the integral I will use the ideal gas law and replace P with nRT/V and make use of equation in "Image 2" to calculate W. Then to obtain the change in enthalpy DH, I will use the following --> DH = DU = -W Thank you for your help. Is this method correct?