Question

a system absorbs 100J of heat and does work of 60J on its surrounding calculate the change the internal energy​

Answer 1

Answer:

+40J

Explanation:

we know that dU = q + w

now, q = +100J (heat is absorbed) and w = -60J (work is done by the system)

therefore, dU = +100J + (-60J) = +40J

Answer 2

Answer:

40 j

Explanation:

ΔU= q+w

= 100-60= 40 kj/mol