FIRST LAW OF THERMODYNAMICS Consider the following reaction in the vessel with a movable piston. X (g) + Y (g) → Z (s) For this reaction, ΔU = 286 J, the piston moves up, and the system absorbs 388 J...

FIRST LAW OF THERMODYNAMICS

Consider the following reaction in the vessel with a movable piston.
X (g) + Y (g) → Z (s)
For this reaction, ΔU = 286 J, the piston moves up, and the system absorbs 388 J of heat from its surroundings.
(a) Does the system do work? (b) How much work?