We diffusion bond two blocks of Cu and Ni. The wider the interdiffusion zone the stronger is the bonded component. When the process is conducted at 800 o C, the width of the interdiffusion zone is 102 mm, after 3 h. What would be the width, if the process were carried out at 900 o C and lasted for 5 h

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 .