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Unformatted text preview: 3. When 2moles of magnesium reacts with oxygen, magnesium oxide is produced and 1204kJ of heat is released. a) write a balanced, thermochemical equation for this. b) Is this reaction endothermic or exothermic? c) How much heat is produced when 2.4g of magnesium reacts with excess oxygen? d) How much heat is produced when 2.5L of oxygen at 765Torr and 25 o C reacts with excess Mg? e) Using your answer from d , how much water could be heated from 25 o C to 75 o C?...
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- Winter '08