A chemical equation gives a lot of information viz,,
1. it tells the names of the reactants and products.
2.1t tells the relative number of molecules of reactants and products.
3. Ittells the relative number of moles of reactants and the products.
4.1ttells the relative weights of reactants and the products.
5. It tells the relative volumes of reacting gases and those of products formed in case of gaseous reactants. For example, the chemical equation.