Which system does more work: (a) ΔE = –436 J, q = 400 J; or (b) ΔE = 317 J, q = 347 J? In which case is heat added to the system: (a) ΔE = –43 J, w = 40 J; or (b) ΔE = 31 J, w = 34 J?

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