A refrgerator cools by evaporating liquified CF2Cl2, dichlorodifluoromethane. how many kilograms of the liguid must be evapoarted to freeze a tray of 525 g water at 0 degrees C to ice at 0 degrees C. The delta H (f) (ice)=6.01 kJ/mol and the delta H (vap) (CF2Cl2)=17.4 kJ/mol.