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Question: a sample of steam with a mass of 0540 g...

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A sample of steam with a mass of 0.540 g at a temperature of 100 ∘C condenses into an insulated container holding 4.45 g of water at 4.0 ∘C. (For water, ΔH∘vap=40.7 kJ/mol and Cwater=4.18 J/(g⋅∘C).) Assuming that no heat is lost to the surroundings, what is the final temperature of the mixture? Express your answer using three significant figures.

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