Question

is Fe + O2 → Fe2O3 a balanced equation? If not, please balance it.

Answer 1

Balanced Equation: 4 Fe(s) + 3 O2(g) = 2 Fe2O3(s)

Answer 2

4Fe + 3O2 ➡ 2Fe2O3
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write it like the picture, though idk if you can really see it