The solubility of potassium nitrate is 13 g per 100. ml of water at 0 oc and 246 g per 100. ml of water at 100.oc. a quantity of 246 g of potassium nitrate is dissolved in 100. ml of water at 100. oc and the solution is cooled to 0 oc. what percentage by mass of the kno3 crystallizes at 0oc?

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 .