A system that does no work but which transfers heat to the surroundings has A) q 0. B) q 0. D) q 0, ΔU

Question

A system that does no work but which transfers heat to the surroundings has A) q < 0, ΔU > 0. B) q < 0, ΔU < 0. C) q > 0, ΔU > 0. D) q > 0, ΔU < 0. E) q < 0, ΔU = 0.

Quizplus · Accepted Answer

If the system transfers heat to the surroundings without doing any work, that means energy is leaving the system. This results in a decrease in internal energy, so ΔU is negative. Additionally, since heat is leaving the system, q is negative. Choice B is the only option that satisfies both of these conditions.

A System That Does No Work but Which Transfers Heat