Mol (labeled)

In chemistry, a mol is unit symbol for the amount of substance, termed a ‘mole’, which contains an Avogadro number of elementary units. [1]

The term ‘mol’, supposedly, was first used in 1895 by German physical chemist Walther Nernst, a truncation of the 1893 term gram-molecule (a term used previously by German physical chemist Wilhelm Ostwald). Nernst also used the term "g-mol" in his introduction of the ideal gas law. [2]

Etymologically, the term "mol" is said to derive from the German mol, meaning small mass.

See also
Avogadro’s constant
Social Avogadro number

1. Daintith, John. (2005). Oxford Dictionary of Science. Oxford University Press.
2. (a) Nernst, Walther. (1895). Theoretical Chemistry: from the Standpoint of Avogadro’s Rule & Thermodynamics. MacMillan and Co.
(b) Ostwald, Wilhelm. (1893). Hand- und Hilfsbuch zur ausführung physiko-chemischer Messungen (Handbook and Support for Making Physico-Chemical Measurements) (pg. 119). Leipzig.

External links
Mole (unit) – Wikipedia.

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