Question

i) A system does 820 J of work and at the same time absorbs 500 J of heat. Calculate the change in internal energy of the system.

Answer 1

Answer:

Explanation:

given,

ΔW = -820 J ( if a system does work by itself then -ve sign is to be kept)

ΔQ = 500 J

We have find ΔU,

we have a formula

ΔU = ΔQ + ΔW

ΔU = 500 + (-820)

ΔU = -320