The Heat of Vaporization of a Certain Refrigerant Is 156

question 52

Multiple Choice

The heat of vaporization of a certain refrigerant is 156 J/g. Calculate the number of kilograms of refrigerant that must be evaporated to freeze a tray of 17 one-ounce (1 oz = 28 g) ice cubes starting with the water at 13°C.Heat capacity (water) = 4.184 J/g °C
ΔH_fusion (water) = 333 J/g

• A) 0.85 kg
• B) 1.2 kg
• C) 4.3 kg
• D) 1.1 kg
• E) 0.17 kg

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