Chemistry - Mole

2 Min
Created at 10 / 2014
8.5
8.8   Informative
8.2   Entertaining
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What and how much is a mole?

The mole is the unit of 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, as there are atoms in 12 grams of carbon-12. This number is expressed by the Avogadro constant, which has a value of 6.022×10^23 mol−1.



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