# Number density (Relation to Molar concentration)

## Description

Number density is an intensive quantity used to describe the degree of concentration of countable objects. For any substance, the number density n can be expressed in terms of its molar concentration. In chemistry, the molar concentration, is defined as the amount of a constituent (usually measured in moles) divided by the volume of the mixture.

Related formulas## Variables

n | Volume number density (m^{-3}) |

N_{A} | Avogadro constant |

N_{1} | A constituent (mol) |

N_{2} | Other constituent (mol) |

V | The Volume of the mixture (m^{3}) |