1. The problem statement, all variables and given/known data what is the type of law that applies for this change? 2. Relevant equations Isobaric,Isochoric ,Isothermal 3. The attempt at a solution the parameters which stays constant during the change for isobaric is pressure and its a first law of thermodynamic.for isochoric is volume and again its a first law of thermodynamic,and for isothermal temperature remains constant and its a adiabatic law,but what expression during these changes stays constant?what would be different in term of parameter v expression .