# Formula Ideal Gas Law Pressure    Volume    Temperature    Particle number

## Pressure

Unit
This pressure prevails in a closed system containing an ideal gas. According to the ideal gas equation, the pressure increases when the temperature $$T$$ of the gas increases or the volume $$V$$ in which the gas is confined is reduced.

## Volume

Unit
The volume of a closed system containing an ideal gas.

## Temperature

Unit
It is the absolute temperature (in Kelvin) of the gas in a closed system.

## Boltzmann Constant

Unit
Boltzmann constant occurs frequently in statistical physics and thermodynamics. Boltzmann constant has the value: $$k_{\text B} ~\approx~ 1.380 \,\cdot\, 10^{-23} \, \frac{\mathrm J}{\mathrm K}$$.

## Particle number

Unit
The number of particles of an ideal gas.