If a one-pound weight were one foot from the pivot or shaft of a lever, how many pound-feet of force would result? a. 4 b. 1 c. 3 d. 2

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.