A system absorbs 623 J of heat while doing 457 J of work.What is the value of ΔU?
A)+1080 J
B)-166 J
C)+166 J
D)-1080 J
E)+623 J

Name: A system absorbs 623 J of heat while doing 457 J of work.What is the value of ΔU? A)+1080 J B)-166 J C)+166 J D)-1080 J E)+623 J
Brand: Quizplus
Rating: 4.8 (38 reviews)

Question

Quizplus · Accepted Answer

According to the first law of thermodynamics:

ΔU = Q - W

Where:
ΔU = change in internal energy
Q = heat absorbed
W = work done

So, substituting the given values:

ΔU = 623 J - 457 J
ΔU = 166 J

Therefore, the answer is C (+166 J)

A System Absorbs 623 J of Heat While Doing 457