mol SI base
Measures: Amount of substance — how many particles
Mole
Chemistry's counting unit — a fixed, enormous number of particles.
Amount of substanceHow it's defined
Since 2019, one mole is exactly 6.02214076×10²³ particles (the fixed Avogadro number). It exists so chemists can count atoms by weighing: one mole of carbon-12 is about 12 grams.
1 mol = 6.02214076×10²³ particles — exact
Convert — honestly
This unit has no convertible siblings on the map yet.
Where you meet it
- Elementii — g/mol on every compound card is grams per this ↗ open elementii
- Every stoichiometry problem ever assigned
Other ways to measure amount of substance
On this map, it stands alone for its quantity.
Source
This page is an authored summary of the authoritative definition — checkable one click away.
NIST — SI Redefinition (2019)