how much thermal energy must a gram of water at 100 celsius gain to vaporize to a gram of steam at 100 celsius what is this quantity of heat called

Answer 1

To vaporize water at 100 degrees Celsius into steam at the same temperature, water requires a specific amount of thermal energy known as the enthalpy of vaporization or latent heat of vaporization.

For water, the latent heat of vaporization is approximately 2260 joules per gram (J/g) at 100 degrees Celsius.

Thus, a gram of water at 100 degrees Celsius must gain about 2260 joules of thermal energy to vaporize into a gram of steam at 100 degrees Celsius.