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26 Given the balanced equation representing a reaction:4Al(s) + 3O2(g) ==> Al2O3(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

Verified Answer :

PhyCS

(2) gains 12 moles of electrons, easy, because it must retain the same mass in a balanced equation, so if there is no exterior mention of any electrons, such as the notation +12e-, than we must assume that the Oxygen took it at any rate.

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