Final answer:
The total mass of the reactants in a chemical equation is equal to the total mass of the products.
Step-by-step explanation:
The total mass of the reactants in a chemical equation is equal to the total mass of the products, according to the law of conservation of mass. In the reaction between silver nitrate (AgNO3) and sodium chloride (NaCl), the equation is balanced, meaning that the number of atoms of each element is the same on both sides of the equation. Therefore, the total mass of the reactants is equal to the total mass of the products. In this case, the total mass of the reactants is equal to the mass of AgCl, which is the product formed in the reaction.