Answer:
Δ U = - 25 J
Explanation:
Given that process is adiabatic ,that is why heat transfer is zero, Q= 0 .
Work done by gas ,W = 25 J
We know that ,from first law of thermodynamics
Q= Δ U + W
Q=Heat transfer
W=Work transfer
ΔU=Change in the internal energy
Now by putting the values in the above equation
0 = 25 + Δ U
Δ U = - 25 J
Therefore the change in the internal energy of the gas is -25 J.
