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Given the balanced equation representing a reaction: 4Al(s) 3O2(g) → 2Al2O3(s) As the aluminum loses 12 moles of electrons, the oxygen (1) gains 4 moles of electrons (2) gains 12 moles of electrons (3) loses 4 moles of electrons (4) loses 12 moles of electrons

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lulu1991
The answer is (2) gains 12 moles of electrons. In every chemical reaction, the electrons will not be destroyed or created, it will only transfer. So the Al loses electrons, the oxygen needs to gain the same amount of electrons.

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