Moles: What is a Mole

What is a Mole? In the field of chemistry, a mole is defined as the amount of a substance that contains exactly 6.02214076 " 1023 ‘elementary entities’ of the given substance. The number 6.02214076"10 23 is popularly known as the Avogadro constant and is often denoted by the symbol ‘N A ’. The elementary entities that can be represented in moles can be atoms, molecules, monoatomic/polyatomic ions, and other particles (such as electrons). For example, one mole of a pure carbon-12 (12 ... Moles are common and usually harmless, but some can develop into a severe skin cancer called melanoma. You can keep your skin protected from the sun's rays to help decrease your risk of moles and ... Moles are small skin lesions consisting of cells that produce melanin. Moles are usually brown, and round or oval with a smooth edge. The vast majority are benign, but changes in size, shape, or ... Learn about the different types of moles , how they develop, and when to see a dermatologist. Find out how to prevent skin cancer and keep your moles healthy.