Question

If 150 joule of heat is added to a system and the work done by the system is 110 Joule, then a change in internal energy: 

Options

• 35

• 38

• 42

• 40

Answer 1

40

Explanation:

I^st law of thermodynamic

ΔQ = ΔU + ΔW

+150 = ΔU + 110

ΔU = 40 Joule