Magnesium (Mg) combusts in air to give a brilliant white

Last updated: 8/4/2022

Magnesium (Mg) combusts in air to give a brilliant white light that has been used in photographic flashes and emergency flares. How much heat is produced if 10.0 g Mg is combusted with excess oxygen gas? Mg(s) + O₂(g) → MgO(s) AH = -601.6 kJ/mol • Report your answer with three significant figures.