The specific heat capacity of ice is 2.1KJ/Kg℃, the heat of fusion of ice is 336KJ/Kg, the latent heat of vaporization of water is 2,268 kJ/kg, and the dimension of specific heat capacity of water is 4.2KJ/Kg℃

If the temperature needs to be known, For example, the change from -1℃ ice to 1℃ water vapor-* * has the following process:

-1℃ ice →℃ ice: m*Cp*△T=.1*2.1*1=2.1KJ

℃ ice →℃ water: m*γ. 1=42KJ

1℃ water →1℃ steam: m*γ water =.1*2268=226.8KJ

So the heat required for a * * * is: 2.1+33.6+42+226.8 = 34.5kJ = 3.5. The above is in the standard state, at 1atm.