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Mg(s) + 1/2 O2(g) -> MgO(s) delta Hc = -601.6 Reaction 1 Mg(s) + 2HCl(aq) -> H2(g) + MgCl2(aq) Reaction 2 MgO(s) + 2HCl(aq) -> MgCl2(aq) + H2O(l) Reaction 3 H2(g) + 1/2O2(g) -> H2O(l) + 285.8 kJ How do i rearrange these questions so they can show the combustion of magnesium ???

Mg(s) + 1/2 O2(g) -> MgO(s) delta Hc = -601.6 Reaction 1 Mg(s) + 2HCl(aq) -> H2(g) + MgCl2(aq) Reaction 2 MgO(s) + 2HCl(aq) -> MgCl2(aq) + H2O(l) Reaction 3 H2(g) + 1/2O2(g) -> H2O(l) + 285.8 kJ How do i rearrange these questions so they can show the combustion of magnesium ???