Choose the appropriate technique below for separating these mixtures into their constituents. (Diffusion, Solvent Extraction, Chromatography, Sublimation, Fractional Distillation and Distillation.
I. Solid iodine and solid calcium carbonate
II. Pigments extracted from the bark of a tree
III. Solid sodium chloride and solid sulphur
IV. Water and propanol
V. Liquid
VI. Solid sodium carbonate and solid calcium
VII. Gaseous hydrogen and gaseous sulphur (iv) oxide.

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Which formula can be used to calculate the molar mass of hydrogen peroxide

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 .