How much energy, in kilojoules, is released or absorbed from the reaction of 1 mole of nitrogen, N 2 , with 3 moles of molecular hydrogen, H 2 , to form 2 moles of ammonia, NH 3 ? Consult Table 1 for...

How much energy, in kilojoules, is released or absorbed from the reaction of 1 mole of nitrogen, N₂, with 3 moles of molecular hydrogen, H₂, to form 2 moles of ammonia, NH₃? Consult Table 1 for bond energies.

(a) +899 kJ>mol

(b) -993 kJ>mol