Question
Balance the following equations:
$\text{Fe}\ +\ \text{O}_2\ \xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{Fe}_2\text{O}_3$

Answer

$4\text{Fe}\ +\ 3\text{O}_2\ \xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }2\text{Fe}_2\text{O}_3$

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