Consider an ideal gas contained in a cylinder that can do work by pushing against a piston, which has a surface area of 30 cm2.
The piston has a constant force of 20 lbs pushing down on it and the cylinder is filled with gas at 25ºC. The gas inside undergoes a chemical reaction that adds 1000 kJ to the system's internal energy. This causes an expansion, which happens adiabatically and isothermally. How much does the volume increase (in cubic centimeters)?