Measuring the Calorimeter Constant (Ca To determine the calorlmeter constant (C)

Question

Measuring the Calorimeter Constant (Ca To determine the calorlmeter constant (C) of a nested "coffee cup calorlmeter, a student pours 50.0 g of water at 21.76*C Into the calorimeter. She then quickly adds 50.0 g of hot water at 78.19·C and replaces the calorimeter lid. She finds that the water has a final emperature of 48.50 C. What is the value of the calorimeter constant? The specific heat for water is 4.184 Click the answer you think is right 23.0 +q Qcal O, where h hot and c cold 5.50 441 10.90 1

Explanation / Answer

Heat lost by hot water= heat gained by calorimeter+ heat gained by cold water

Heat lost by hot water= mass of hot water* specific heat* temperature difference

Heat gained by cold water= mass of cold water* specific heat* temperature difference

Heat gained by calorimeter= heat capacity of calorimeter* temperature difference

50*4.184*(76.27-49.45)= C*(49.45-24.32)+ 50*4.184*(49.45-24.32), C is the heat capacity of calorimeter

C= 14.06 J/deg.c ( A is correct)

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