Question

why steam at 100 degree celsius is better for heating purpose than water at 100 degree celsius

Answer 1

To convert it to water at 100 degrees centigrade the heat required is just msdT to change the temperature from 25 to 100 degrees… ... steam at 100°Calso have latent heat of boiling which it have acquired during conversion from liquid to gas and thus it have more energy then boiling water at 100°C.