As a result of the law of conservation, during a chemical change the mass of the products is equal to the mass of the ?

mass of the products = mass of the reactants.

no one*

12 years later, no has still answer lol

Yes, according to the law of conservation of mass, the total mass of the products in a chemical reaction is equal to the total mass of the reactants. This law states that mass can neither be created nor destroyed during a chemical reaction, but it can only change forms or be rearranged. Therefore, the total mass of the reactants before the reaction must be equal to the total mass of the products after the reaction.