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A 50.0-g copper calorimeter contains 210 g of water at 20.0°C. How much steam at 100°C...

A 50.0-g copper calorimeter contains 210 g of water at 20.0°C. How much steam at 100°C must be condensed into the water if the final temperature of the system is to reach 60.0°C?

A step-by-step process (ex. Q1+Q2+...+ Qn = 0) would be appreciated. I am not concerned with the answer; I would just like a clear setup of the problem.

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