Respuesta :

Answer:

ΔU = - 168 KJ

Explanation:

  • ΔU = Q + W.....................first law

∴ W = - 61 KJ........A system performs on its surroundings

∴ Q = - 107 KJ,,,,,,A system release heat

⇒ ΔU = - 107 KJ - 61 KJ = - 168 KJ