The best represents the law of conversation of mass? me pl

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

True or false graphs must include scales that increase by the same amount

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.