A system releases 100 kj of heat while 80 kj of work is done on the system. calculate the change in internal energy.
A system releases 100 kj of heat while 80 kj of work is done on the system. calculate the change in internal energy.
Answer:
The change in internal energy of a system is given by the first law of thermodynamics, which states that:
ΔU = Q - W
where ΔU is the change in internal energy, Q is the heat transferred to the system, and W is the work done by the system.
ΔU = Q - W=100-80=20 kJ.