Question

Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5363 J and its pressure is 2.92 105 Pa. In the second step it is subjected to isobaric adiabatic compression until its volume decreases by 7.90 10-3 m3. What is the total change in internal energy of this gas?