Rewrite each equation below with the delta H value included with either the reactants or the products and identify the reaction as endothermic or exothermic.
A) H2 (g) + O2 (g) - > H2O (l);
DeltaH^0 = - 285.83
B) 2Mg (s) + O2 (g) - >2MgO (s); deltaH^0 = - 1200kJ
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