Light travels
a. about 300,000 km/s.
b. faster than anything we know of.
c. the same speed as other types of electromagnetic radiation.
d. all of these describe how light travels.

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.