5300 J of heat are added to a system. It does 3300 J of work on the surroundings. What is ΔE in J?
ΔE = Q + W
Q = 5300 J
Q is + because heat is added to the system
W = -3300 J
W is - because work is done by the system...
so ΔE = 5300 - 3300 = 2000 J
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Verified answer
ΔE = Q + W
Q = 5300 J
Q is + because heat is added to the system
W = -3300 J
W is - because work is done by the system...
so ΔE = 5300 - 3300 = 2000 J