Ammonia (NH₃)is Used as a Refrigerant

Multiple Choice

Ammonia (NH₃) is used as a refrigerant.At its boiling point of -33 °C,the standard enthalpy of vaporization of ammonia is 23.3 kJ/mol.How much heat is released when 50.0 g of ammonia is condensed at -33 °C?

A) -0.466 kJ
B) -7.94 kJ
C) -36.6 × 10³ kJ
D) -68.4 kJ
E) -1.17 × 10³ kJ