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4Al(s) + 3O2(g) 2Al2O3 (s) How many molecules of O2 are used in the reaction?
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4Al(s) + 3O2(g) 2Al2O3 (s) How many molecules of O2 are used in the reaction?

User Ocodo
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3 molecules of O2 are used in this reaction.

Hope this helps!
User Sergey Passichenko
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