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A tube leads from a 0.150 kg calorimeter to a flask in which water is boiling under atmospheric pressure. The calorimeter has specific heat capacity...

A tube leads from a 0.150 kg calorimeter to a flask in which water is boiling under atmospheric pressure. The calorimeter has specific heat capacity 420 J/(kg⋅K), and it originally contains 0.340 kg of water at 15.0 ∘C. Steam is allowed to condense in the calorimeter at atmospheric pressure until the temperature of the calorimeter and contents reaches 71.0 ∘C, at which point the total mass of the calorimeter and its contents is found to be 0.525 kg.

Compute the heat of vaporization of water from these data.

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