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A copper ball of mass 100 g is at a temperature T. It is dropped in a copper calorimeter of mass 100 g, filled with 170 g of water at room temperature. Subsequently, the temperature of the system is found to be 75°C. T is (Given, room temperature = 30°C, specific heat of copper = 0 1. cal/g°C)(a) 885°C(b) 1250°C(c) 825°C(d) 800°C

Satendra Kumar , 6 Years ago
Grade 12th pass
anser 1 Answers
Eshan

Last Activity: 6 Years ago

Dear student,

The loss in heat energy of the copper ball is equal to gain in energy of the calorimeter+water system

\implies m_{ball}C_{copper}(T-75)=m_{calorimeter}C_{copper}(75-30)+m_{water}C_{water}(75-30)
We know thatC_{water}=1 cal/g^{\circ}C
Using the given values we getT=885^{\circ}C

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