Enter your answer in the provided box. A 54.98-g sample of water at 86.9°C is added to a sample of water at 25.6°C in a constant-pressure calorimeter. If the final temperature of the combined water is 42.6°C and the heat capacity of the calorimeter is 26.3 J/°C, calculate the mass of the water originally in the calorimeter. m= g

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