N2(g) + 3H2(g) →2NH3(g) At the end of the chemical reaction, 5 moles of NH3 are produced.
How many moles of N2 and H2 entered the reaction?

2.5 moles of N₂ and 7.5 moles of H₂ entered the reaction

Explanation:

In reaction:

N₂(g) + 3 H₂(g) → 2 NH₃(g)

You can see that the stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) requires the following amounts of reagents and are produced:

The following three rules can apply:

moles of N₂= 2.5

moles of H₂= 7.5

2.5 moles of N₂ and 7.5 moles of H₂ entered the reaction

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