How Much Heat Is Released When 105 G of Steam

question 105

Multiple Choice

How much heat is released when 105 g of steam at 100.0 °C is cooled to ice at -15.0 °C? The enthalpy of vaporization of water is 40.67 kJ mol^-1, the enthalpy of fusion for water is 6.01 kJ mol^-1, the molar heat capacity of liquid water is 75.4 J mol^-1 °C^-1, and the molar heat capacity of ice is 36.4 J mol^-1 °C^-1.

• A) 54.8 kJ
• B) 273 kJ
• C) 319 kJ
• D) 347 kJ

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