The Heat of Vaporization of a Certain Refrigerant Is 148

question 80

Multiple Choice

The heat of vaporization of a certain refrigerant is 148 J/g. Calculate the number of kilograms of refrigerant that must be evaporated to freeze a tray of 16 one-ounce (1 oz = 28 g) ice cubes starting with the water at 15°C. Heat capacity (water) = 4.184 J/g °C
H_fusion (water) = 333 J/g

• A) 0.82 kg
• B) 1.2 kg
• C) 4.2 kg
• D) 1.1 kg
• E) 0.19 kg

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