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An 810-g iron block is heated to 400 ∘C and placed in an insulated container (of...

An 810-g iron block is heated to 400 ∘C and placed in an insulated container (of negligible heat capacity) containing 38.0 g of water at 25.0 ∘C.
What is the equilibrium temperature of this system? The average specific heat of iron over this temperature range is 560 J/(kg⋅K).

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