A system that does no work but which transfers heat to the surroundings has:?

(a) q < 0, ΔE > 0

(b) q > 0, ΔE > 0

(c) q > 0, ΔE < 0

(d) q < 0, ΔE < 0

(e) q < 0, ΔE = 0

1 Answer

  • Heat going out of a system is negative, so (b) and (c) are ruled out. If the heat is going out with no added input, then the energy of the system has to decrease and is negative. So (d) is the answer.

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