試題詳解

64. To cool 500 g of liquid water from 25°C to 0°C, what is the minimum number of ice cubes need to use? Each ice cube contains 20.0 g of water and temperature is -5°C. The enthalpy of fusion of ice is 6.020 kJ/mol; the heat capacity of liquid water is 75.4 J/mol·°C; the heat capacity of solid water is 2.05 J/g·°C.
(A) 6
(B) 7
(C) 8
(D) 9
(E) 10