Question

2700 J of heat is produced when 1.7 g of ammonia undergoes a reaction. The molar enthalpy of reaction for the ammonia is ab kJ/mol.

Answer 1

M (NH₃) = 18 g/mol

n (NH₃) = 1.7/18 = 0.094 mol

Molar enthalpy of ammonia is: 2700 J : 0.094 mol = 28 723 J/mol