Question

A sample of gas absorbs 4000 kJ of heat and surrounding does 2000 J of work on sample, what is the value of ΔU?

Options

• 4000 kJ

• 6000 kJ

• 2000 kJ

• 4002 kJ

Answer 1

4002 kJ

Explanation:

ΔU = W + Q

= (4000 kJ) + (2000 × 10^-3 kJ)

= 4002 kJ