Determine the energy needed to heat 15.5 g of NH3 (molar mass = 17.04 g/mol) from -59.0C to -9.8C at 1 atm. Use the following data. Normal Boiling point of NH3 = -33.4C Normal Melting point of NH3 = -77.7C Specific heat capacity of NH3(1) = 4.70 J/(g.K) Specific heat capacity of NH3(g) = 2.20 J/(g.K) Heat of vaporization of NH3 = 23.5 kJ/mol