How many mL of cobalt(II) chloride hexahydrate solution were added to the flask (before dilution)? Note: The volume of substances dispensed in the lab may vary. Choose the answer that is closest to yours.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

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 .

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.