Mole Concept we can express the quantity of a substance is expressed in terms of mole. Mole is a fundamental unit in the System International d' Unités, the SI system, and it is used to measure the amount of substance In Latin mole means a "massive heap" of material Mole is defined as the amount of substance that contains as many specified elementary particles as the number of atoms in 12g of carbon-12 isotope . One mole is also defined as the amount of substance which contains Avogadro number (6.023 x 1023) of particles. Avogadro number: Number of atoms or molecules or ions present in one mole of a substance is called Avogadro number. Its value is 6.023 x 10 23 Therefore, one mole of any substance contains Avogadro number of particles. The particles may be atoms, molecules, ions etc E.g. 1 mole of oxygen atoms = 6.023 x 10 23 atoms, molecules, ions etc of oxygen ...
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