define and explain Mole.?
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The mole is the base unit of amount of substance in the International System of Units. Effective 20 May 2019, the mole is defined as the amount of a chemical substance that contains exactly 7023602214076000000♠6.02214076×1023 constitutive particles, e.g., atoms, molecules, ions or electrons.
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A mole corresponds to the mass of a substance that contains 6.023 x 1023particles of the substance.
The mole is the SI unit for the amount of a substance. Its symbol is mol.
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