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  • https://ukrayinska.libretexts.org/%D0%A5%D1%96%D0%BC%D1%96%D1%8F/%D0%92%D1%81%D1%82%D1%83%D0%BF%D0%BD%D0%B8%D0%B9%2C_%D0%BA%D0%BE%D0%BD%D1%86%D0%B5%D0%BF%D1%82%D1%83%D0%B0%D0%BB%D1%8C%D0%BD%D0%B8%D0%B9_%D1%82%D0%B0_%D0%97%D0%9E%D0%91_%D0%A5%D1%96%D0%BC%D1%96%D1%8F/%D0%92%D1%81%D1%82%D1%83%D0%BF%D0%BD%D0%B0_%D1%85%D1%96%D0%BC%D1%96%D1%8F_(CK-12)/10%3A_%D0%9A%D1%80%D0%BE%D1%82
    The mole is the unit of measurement in the International System of Units (SI) for amount of substance. It is defined as the amount of a chemical substance that contains as many elementary entities (e....The mole is the unit of measurement in the International System of Units (SI) for amount of substance. It is defined as the amount of a chemical substance that contains as many elementary entities (e.g., atoms, molecules, ions, electrons, or photons). This number is expressed by the Avogadro constant, which has a value of 6.022140857×1023mol1. The mole is one of the base units of the SI, and has the unit symbol mol.