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based on the law of conservation of matter, describe the relationship between the mass of the reactants and the mass of the products.

a. the mass of the reactants equals the mass of the products.
b. the mass of the reactants is less than the mass of the products.
c. the mass of the reactants is greater than the mass of the products.
d. the mass of the products is always greater than the mass of the reactants.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation: