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What number should be placed in the blank to balance the equation 4fe + __O2 = 2Fe2O3

What number should be placed in the blank to balance the equation 4fe + __O2 = 2Fe2O3
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What number should be placed in the blank to balance the equation 4fe + __O2 = 2Fe2O3

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User GEkk
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It should be a 3 because there are 6 oxygens and to balance the equation you need to balance the reactants side so you put a 3 so the products are the same as the reactants
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User Robert Van Sant
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