Gas density¶
The density of a gas can be calculated using its molecular weight, pressure, and temperature as shown below:
\[\rho_{gas} = \frac{P \cdot MW}{R \cdot T}\]
Nomenclature¶
\(\rho_{gas}\)  Density of gas (kg/m³)
\(P\)  Pressure of the gas (Pa)
\(MW\)  Molecular weight of the gas (g/mol)
\(R\)  Gas constant as 8.3145 [(m³ Pa)/(K mol)]
\(T\)  Temperature of the gas (K)
Source code¶

chemics.gas_density.
rhog
(mw, p, tk)[source]¶ Calculate gas density from molecular weight, pressure, and temperature.
 Parameters
mw (float) – Molecular weight of gas [g/mol]
p (float) – Pressure of the gas [Pa]
tk (float) – Temperature of the gas [K]
 Returns
rho (float) – Density of gas [kg/m^3]
Examples
>>> rhog(28, 101325, 773) 0.4414