the work done by a gas when it expands to 96 L is 4100 J. if the external pressure is 2.0 atm, determine the initial volume of the gas.

Answer 1

W = pdV. If the gas is expanding it does work on the surroundings; therefore, W = -4100.
-4100 = -2*(V2-V1)

Answer 2

I forgot to tell you that you must convert the 4100 J to L*atm. Divide by 101.325.