If a solution is holding more solid solute than it is supposed to at a certain temperature, how could you get some of the solute to precipitate out of the solution and become solid particles on the bottom?

a. The solution should be heated

b. the solute will never come back once it’s been dissolved

c. the solution should be left alone

d. the solution should be stirred

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .