(a) 1 kg of steam at 100°C is cooled and condenses to water at 100°C. Calculate the change in entropy.(b) 1 kg of water at 100°C is cooled to 0°C. Calculate the change in entropy.(c) 1 kg of water at 0°C fuses to solid ice at 0°C. Calculate the change in entropy.(d) 1 kg of mercury at 100°C is cooled to 0°C. Calculate the change in entropy.