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In the equation \(2\mathrm{H}_2 + \mathrm{O}_2 \rightarrow ?\) for the formation of water, how many water molecules will be present on the product side?

Answer and explanation

Correct answer: Two

The balanced equation is \(2\mathrm{H}_2 + \mathrm{O}_2 \rightarrow 2\mathrm{H}_2\mathrm{O}\). The reactant side has 4 hydrogen atoms and 2 oxygen atoms. \(2\mathrm{H}_2\mathrm{O}\) also contains 4 hydrogen atoms and 2 oxygen atoms, so 2 water molecules are formed. Writing only 1 water molecule would not balance the atoms.

Related tags

ScienceClass 10Chemical ReactionsChemical EquationsBalancing EquationsWater Formation

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