63. How much energy is needed to convert 100 g of ice at 0℃ to water at 50℃?
specific heat capacity (ice) = 2.10 J/g· ℃；
specific heat capacity (water) = 4.18 J/g· ℃；
heat of fusion = 333 J/g；
heat of vaporization = 2258 J/g
(A) 10.1 kJ
(B) 20.7 kJ
(C) 31.4 kJ
(D) 54.2 kJ
(E) 65.8 kJ
答案：D
統計：A:0,B:0,C:0,D:1,E:0
難度：計算中