Question

Count the nitrogen and hydrogen atoms in the reactants. How many of each kind of atom are there?

Answer 1

Answer:

If we count the number of hydrogen atoms in the reactants and products, we find two hydrogen atoms. But if we count the number of oxygen atoms in the reactants and products, we find that there are two oxygen atoms in the reactants but only one oxygen atom in the products.

Answer 2

Answer:

79% nitrogen and 0.001% hydrogen