mole (chemistry)

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mole

mole in chemistry, a quantity of particles of any type equal to Avogadro's number, or 6.02×10 ²³ particles. One gram-molecular weight of any molecular substance contains exactly one mole of molecules. The term mole is often used in place of gram-molecular weight; e.g., one speaks of 18 grams of water as one mole of water rather than as one gram-molecular weight of water. The mole is a unit in the International System of Units (SI).

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mole

A Dictionary of Biology | 2004 | Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. (Hide copyright information) Copyright

mole (symbol mol) SI unit of amount of substance. This is the amount of substance that contains as many elementary units, such as atoms and molecules, as there are atoms in 0.012kg of carbon-12. A mass of one mole of a compound is its relative molecular mass (molecular weight) in grams.

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