Order the items below from largest to smallest size. ITEM BANK

1 atom of oxygen
1 mole of oxygen
1 molecule of oxygen
3.01 X 1023 atoms of oxygen
4 grams of oxygen

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An observation that requires measurement is called quantitative observable or qualitative

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 .

Why dose heating increase the speed at which a solution dissolved in water