Answer;
C. the mass of the reactant is equal to the mass of the products
Step-by-step explanation;
- According to the Law of conservation of mass, the mass of the reactants should be equal to the mass of the products, and therefore, the number of atoms of each element on the reactants side should be equal to those on the products side.
- Mass cannot be created or destroyed in a chemical reaction. The total mass of substances taking part in a chemical reaction is conserved during the reaction. Thus, the number of atoms in a reaction remains the same.