Amount of substance definition

The amount of substance of an entity type X equals the number of those entities divided by the Avogadro constant. It is used to convert between a count of particles and the number of moles in chemistry.

n(\mathrm{X}) = \frac{N(\mathrm{X})}{N_{\mathrm{A}}}

What the symbols mean

amount of substance of entities X, in moles (mol)
number of entities X (dimensionless)
Avogadro constant, about 6.022\times10^{23} mol^{-1}

About this formula

  • FieldChemistry
  • TopicAmount of substance
  • LevelHigh school
  • Also calledamount of substance, moles from number of entities, mole definition, number of moles formula, avogadro number moles, chemical amount formula
  • SourceWikidata Q104946

Write it in Obsidian

MathLive is a free visual math editor for Obsidian. Run Find a formula, type “amount of substance definition”, and it goes into your note as editable LaTeX. You can also scan formulas from screenshots, PDFs and handwriting.

Related formulas