Which metal is the best choice for recovering copper (reacting with copper) from the solution? fe, ag, zn, or al

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride