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Which balances the equation Mg + O2 → MgO?
Mg + 2O2 → 4MgO
2Mg + 2O2 → 2MgO
2Mg + O2 → 2MgO
2Mg + 2O2 → 4MgO
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2Mg + O2 → 2MgO
Explanation: O2 has 2 oxygen atoms, so you need 2 Mg atoms to form 2 MgO. Coefficients: 2 Mg + 1 O2 → 2 MgO.
Explanation: O2 has 2 oxygen atoms, so you need 2 Mg atoms to form 2 MgO. Coefficients: 2 Mg + 1 O2 → 2 MgO.
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