If the product side of a reaction has a mass of 89.6 grams, what should the reactant side’s mass be? _____________

According to the law of conservation of mass, the total mass of the reactants in a chemical reaction must equal the total mass of the products. This means that if the product side of a reaction has a mass of 89.6 grams, the reactant side must also have a mass of 89.6 grams. So, the reactant side's mass should be **89.6 grams**.