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Which statement regarding this equation is TRUE?

4Fe (s) + 3O2 (g) —> 2Fe2O3 (s)

There are 2 reactants.
There are 2 reactants.

There are 5 atoms of oxygen on the reactant side.
There are 5 atoms of oxygen on the reactant side.

The coefficient on O2 is 8.
The coefficient on O, 2, is 8.

Iron (III) oxide is a gas.