Heat required to melt 1g of ice at 0°C to water at 0°C=1×80cal. Heat required to raise temperature of 1 g of water from 0°C to 100°C=1×1×100=100cal Total heat required for maximum temperature of 100°C=80+100=180cal As one gram of steam gives 540 cal of heat when it is converted to water at 100° C, therefore, temperature of the mixture would be 100°C.