17x10^5 joules are absorbed by an expanding gas that does 8x10^5 joules of work. (a) Find ΔU; (b) Assuming it expands at constant pressure, what's the change in volume?
Am I correct to use this:
ΔU = Q - W
Then after finding ΔU,
PΔV = Q - ΔU
Or does this make no sense?