Chapter 3

The mole (mol) is the amount of a substance that contains the same number of entities as there are atoms in exactly 12 g of carbon-12. One mole (1 mol) contains 6.022x10. 23. entities (to four significant figures). This number is called Avogadro’s number and is abbreviated as . N. The Mole. The term “ entities ” refers to atoms, ions ... ................
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