問題詳情

32. How much heat (in kilocalories) is needed to convert 1 kg of ice at 0° C into steam at 100° C? (Lf = 3.33 x 105 J/kg; Lv 2.26 x 106 J/kg; 1 cal = 4.186 J.)
(A)640
(B)180
(C)720
(D)360

參考答案

答案：C
難度：適中0.428571
統計：A(0),B(3),C(3),D(1),E(0)