An atom has the electron arrangement 2,8. What will it do to gain a full
outer shell?
A) bond with itself
B) gain 8 electrons
C) lose 8 electrons.
D) nothing, it already has a full outer shell

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 .

Condensation happens when water vapor cools. true or false? ?

How many atoms or molecules are there in a mole of a substance?