A vacuum flask keeps its contents warmer or cooler than the surrounding environment for a length of time. It consists of two flasks, one inside the other, that connect at the neck. The space between the two flasks is completely empty of air. Why does the design of the vacuum flask minimize heat transfer by conduction

Complete each row of the table below by filling in the missing prefix or missing exponent.

Which activity is an innate behavior

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 .