Question

The two reactants combine to form a single product, ammonia, nh3, which is not shown. write a balanced chemical equation for the reaction. based on the equation and the contents of the left (reactants) box how many molecules should be shown in the right (products) box?

Answer 1

If the product is ammonia, the reactants must be the diatomic gases N₂ and H₂. The complete balanced reaction is shown below:

N₂ + 3 H₂ → 2 NH₃

Now, the number of molecules on the left or reactant side are: 2 molecules of nitrogen and 3*3 = 6 molecules of hydrogen. The total number would be 8 molecules. The same number of molecules is counted on the right or product side. This is to obey the Law of Conservation of Mass.