Calculate the internal energy change for each of the following. a one hundred (100.) joules of work are required to compress a gas. at the same time, the gas releases 43 j of heat. j submit b a piston is compressed from a volume of 8.60 l to 1.10 l against a constant pressure of 2.00 atm. in the process, there is a heat gain by the system of 360. j. j c a piston expands against 1.00 atm of pressure from 14.5 l to 32.0 l. in the process, 1037 j of heat is absorbed.