Question

A system releases 150 kJ of heat while 10 kJ of work is done on the system by
the surroundings. Calculate the change in internal energy (in kJ).

Answer 1

Answer:

160J OR 140J

Explanation:

Depends on teacher which formula your teacher uses.

U=Q+W OR U=Q-W

Method 1:

U=150+10J=160

U=150-10=140J