Pleae it is the subject science 50 points for answering

Drag each item into the proper state of matter category.

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.

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this