We can get the temperature of the metal to be close to 100 degrees using calorimetry which is used to measure amount of heat to or from substance.
Calorimetry is used to measure the amounts of heat transferred to or from a substance. In this, heat is exchanged with a calibrated object that is calorimeter. The temperature change is measured by the calorimeter which is used to derive the amount of heat transferred by the process under study.
To find the temperature change of a metal:
To know more about calorimetry, refer
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