Normalised measure of the total amount of the constitutive particles (molecules/atoms) in a given sample of substance:

\nu = \frac{N}{N_A}

where

= 6.022140758(62) · 10²³ mol⁻¹

Symbol	Dimension	SI Unit	Oil Metric Unit	Oil Field Unit
	1	mol	mol	mol

Alternative equations:

\nu = \frac{m}{M}

\nu = \frac{V}{V_m}

\nu = \frac{N}{N_A} = \frac{ m_u \cdot N }{m_u \cdot N_A} = \frac{m}{M}

where

\nu = \frac{m}{M} = \frac{\rho \cdot V}{M}  = \frac{V}{V_m}

where

See Also