A chemical reaction occurred in a closed container. Which is true of the equation of the reaction as shown below? N2 + 3H2 -> 2NH3 A. The mass and molecules of the reactants equal the mass and molecules of the products.

B. The volume and mass of the reactants equal the volume and mass of the products.

C. The molecules and atoms of the reactants equal the molecules and atoms of the products.

D. The atoms and mass of the reactants equal the atoms and mass of the products.