Solution of task 97 of Chemistry Book Shimanovich 2003

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97. The reaction of ammonia combustion is expressed by a thermochemical equation:
4NH3 (g) + 3O2 (g) = 2N2 (g) + 6H20 (g); H = -1530.28 kJ.
Calculate the heat of formation of NH3 (g).

Answer: -46.19 kJ / mol.

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