2. [1|] pts.] Adiabatic. Suppose you are given a gas that expands adiabatically so that it follows a path in the 15-1" diagram satisfying pV" = constant, (1) for some real number 1r \"Jr 1. Given that the initial pressure and volume are no and V0 respectively, express the change in Internal energy of the gas upon displacing the surrounding air in terms of poJ/o and 1 when it expands to twice its initial volume. Did the internal energy increase or decrease