This describes how much of the reactants (on the left) and the products (on the right) are present at equilibrium. The diagram below shows an example of an equilibrium on the left and an ...

The atoms in the reactants are: 1 calcium atom, 2 chlorine atoms, 2 sodium atoms, 2 hydrogen atoms, 2 carbon atoms, and 6 oxygen atoms The atoms in the products are: 1 calcium atom, 2 chlorine atoms, ...