One of these is called the law of conservation of mass, which states that during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants. The law of conser...One of these is called the law of conservation of mass, which states that during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants. The law of conservation of mass states that, during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants. The law of conservation of mass states that, during a chemical reaction, the total ______ of the products must be equal to the total ______ of the reactants.
