Amount of chemical substance (physical property)

Normalised measure of the molecules/atoms count $\begin{array}{l}N\end{array}$ in a given volume of substance:

(1)	$\begin{array}{l}\displaystyle \nu = \frac{N}{N_A}\end{array}$

where $\begin{array}{l}N_A\end{array}$ = 6.022140758(62) · 10²³ mol⁻¹ is Avogadro constant

Symbol	Dimension	SI units	Oil metric units	Oil field units
$\begin{array}{l}\nu\end{array}$	1	mole	mole	mole

It relates to the substance volume $\begin{array}{l}V\end{array}$ and substance molar volume $\begin{array}{l}V_m\end{array}$ as:

$\begin{array}{l}\displaystyle \nu = \frac{V}{V_m}\end{array}$

Derivation

$\begin{array}{l}\displaystyle \nu = \frac{N}{N_A} = \frac{ m_u \cdot N }{m_u \cdot N_A} = \frac{m}{M} = \frac{\rho \cdot V}{M} = \frac{V}{V_m}\end{array}$

where

$\begin{array}{l}m\end{array}$	mass of a substance with amount $\begin{array}{l}\nu\end{array}$
$\begin{array}{l}m_u\end{array}$	molecular mass of a given substance
$\begin{array}{l}M\end{array}$	molar mass of a given substance
$\begin{array}{l}\rho\end{array}$	density of a given substance

Page tree

Amount of chemical substance (physical property)