A sample of gas in a cylinder of volume 3.64 L at 275 K and 2.68 atm expands to 7.04 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A.
Answer in units of J
What I did was basically W=-P(delta V)
Which was -(2.68 atm)(3.4 L)(101.3 J/L*atm) and ended up getting -923.0456 J, but that was not the correct answer. So, how would I do this problem then?