During a catalyzed reaction, what is true of the catalyst? *22*

a. it is one of the products of the reaction.
b. it is one of the reactants of the reaction.
c. it is not consumed.
d. it is not dissolved.

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.