4.) Calculate the work for each of the following processes. A sample of gas begins in a cylinder fitted with a piston with a volume of 3.42 L at 298 K and a pressure of 2.57 atm and expands to a final volume of 7.39 L by two different pathways. Path A is an isothermal, reversible expansion. Path B involves two steps. In the first, the gas is cooled at constant volume to 1.19 atm. In the second step, the gas is heated and allowed to expand against a constant external pressure Of 1.19 atm until the final volume is 7.39 L