One mole of a substance represents on a microscopic, atomic basis and macroscopic, mass basis should be explained. Reason for chemists to define the mole in this manner should be discussed.
According to Avogadro theory, sample in which the ratio of the masses is the same as the ratio of the masses of the individual atoms always contain the same number of atoms. If we weigh out samples of all the elements such that each sample has a mass equal to its average atomic mass in grams, these samples all contain the same number of atoms. This number is called the Avogadro’s number and equals to mole.
Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*
*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.