One kilogram of ice at -20 degrees C is heated to 0 degrees C and melted. the resulting water is heated to 100 degrees C, vaporized, and the steam is further heated to 400 degrees C. Assume that all the processes are isobaric. Calculate the change in enthalpy in kilocalories and in joules. (the specific heat for ice, liquid water, and steam are 0.55,1.00 and 0.48 kcal/kg, respectively.)