Determining the specific heat of lead :

a- A 150.0-g sample of lead is heated to the temperature of boiling water (100.0°C).

b- A 50.0-g sample of water is added to a thermally isolated beaker, and its temperature is found to be 22.0°C.

c- The hot lead is dumped into cold water, and the final lead-water mixture has a temperature of 28.8°C.