An unknown substance has a mass of 0.125 kg and an initial temperature of 95.5°C. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kg of water initially at 20.5°C. The mass of the aluminum container is 0.150 kg, and the temperature of the calorimeter increases to a final equilibrium temperature of 32.0°C. Assuming no thermal energy is transferred to the environment, calculate the specific heat of the unknown substance. ? J/kg · °C

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A: The given values are, mu=0.125 kgTi,u=91.5° Cmw=0.285 kgTi,w,Al=27.5° CmAl=0.150 kgTf=32.0° C

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Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.