How many molecules of carbon is required to balance the following reaction.
$2 F e_{2} O_{3} + C \to 4 F e + 3 C O_{2}$

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Solution

The correct option is C 3
$2 F e_{2} O_{3} + 3 C \to 4 F e + 3 C O_{2}$
This is the balanced chemical reaction in which three molecules of carbon is required to balance the reaction.

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2 F e_{2} O_{3} + 3 C \to 4 F e + 3 C O_{2}

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F e

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4 F e + 3 O_{2} \to 2 F e_{2} O_{3}

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