Question

A system undergoes a two-step process. In the first step, the internal energy of the system increases by 226 J when 136 J of work is done on the system. In the second step, the internal energy of the system increases by 117 J when 170 J of work is done on the system. For the overall process, find the heat.

Answer 1

Net heat gained = 0

Step-by-step explanation:

Given:

Internal energy = 226 J

Work done = 136 J

Computation:

Heat gained = 226-136

Heat gained = 90 J

So,

Internal energy gain = 117 J

Work done = 170 J

Heat lost = 170 J - 117

Heat lost = 63 J

Net heat gained = 0