Element story

Counting atoms with the mole

The mole connects the microscopic world of atoms and molecules to measurable laboratory amounts. One mole contains exactly the Avogadro constant number of specified entities.

Start with the nucleus

The mole connects the microscopic world of atoms and molecules to measurable laboratory amounts. One mole contains exactly the Avogadro constant number of specified entities.

The mole connects the microscopic world of atoms and molecules to measurable laboratory amounts. One mole contains exactly the Avogadro constant number of specified entities.

It is chemistry’s counting unit: like a dozen, but designed for unimaginably small objects.

Stoichiometry turns a balanced chemical equation into a quantitative relationship between reacting species.

Stoichiometry turns a balanced chemical equation into a quantitative relationship between reacting species.

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Mole And Avogadro · Stoichiometry

Sources

EN · institutional/academic · IUPAC · NIST · BIPM