Answer:
U = 71 J
Explanation:
given,
system absorb heat = 559 J
Work done during expansion = 488 J
First law of thermodynamics state that energy can neither be created nor be destroyed.
Apply First law of thermodynamics:
Q - H = U
where
Q = +559 J
W = 488 J
U = Q - H
U = 559 - 488
U = 71 J
The change in internal energy is equal to U = 71 J
