# Specific Gas Constant - related to the Boltzmann constant

## Description

The ideal gas constant, denoted by the symbol R or R) is a physical constant which is featured in many fundamental equations in the physical sciences, such as the ideal gas law. Physically, the gas constant is the constant of proportionality that happens to relate the energy scale in physics to the temperature scale, when a mole of particles at the stated temperature is being considered.

The specific gas constant of a gas or a mixture of gases (Rspecific) is given by the molar gas constant divided by the molar mass (M) of the gas/mixture.

Just as the ideal gas constant can be related to the Boltzmann constant, so can the specific gas constant by dividing the Boltzmann constant by the molecular mass of the gas as shown here.

Related formulas## Variables

R_{specific} | specific gas constant (J*kg^{-1}*K^{-1}) |

k_{B} | Boltzmann constant |

m | molecular mass of the gas (kg) |