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

User GEkk
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1 Answer

6 votes
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
User Robert Van Sant
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