A sample of an ideal gas in a cylinder of volume 2.86 L at 298 K and 2.22 atm expands to 8.50 L by two different pathways. Path A is an isothermal, reversible expansion. Path B has two steps. In the first step, the gas is cooled at constant volume to 1.42 atm . In the second step, the gas is heated and allowed to expand against a constant external pressure of 1.42 atm until the final volume is 8.50 L . Calculate the work for path A in Joules.