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 5460 j of heat is transferred into the gas and its pressure is 3.72 ✕ 105 pa. in the second step it is subjected to isobaric compression until its volume decreases by 7.50 ✕ 10−3 m3 and 1220 j of heat is transferred out of the gas. what is the total change in internal energy of this j?