A chemical formula or equation has reactants on one side and products on the other side of the equation in such a way that the reactants and products are balanced.
Example: NaOH+HCl--->NaCl+H2O, you will find the reactants (NaCl) are balanced with the products NaCl+H2O in such a way that the number of Moles of each of reactants and products are balanced.
Example: NaOH+HCl--->NaCl+H2O, you will find the reactants (NaCl) are balanced with the products NaCl+H2O in such a way that the number of Moles of each of reactants and products are balanced.
