4 NH3(g) + 3 O2(g) → 2 N2(g) + 6 H2O(g) If the standard molar heats of formation of ammonia, NH3(g), — Thermodynamics Chemistry Question

4 NH₃(g) + 3 O₂(g) → 2 N₂(g) + 6 H₂O(g)

If the standard molar heats of formation of ammonia, NH₃(g), and gaseous water, H₂O(g), are -46 kJ/mol and -242 kJ/mol, respectively, what is the value of ΔH°298 for the reaction represented above?