he gas constant (also known as the molar, universal, or ideal gas constant, denoted by the symbol R or R) is a physical constant which is featured in a large number of fundamental equations in the physical sciences, such as the ideal gas law and the Nernst equation. It is equivalent to the Boltzmann constant, but expressed in units of energy (i.e. the pressure-volume product) per temperature increment per mole (rather than energy per temperature increment per particle).
- R = 8.314472(15) J · K-1 · mol-1
- The US Standard Atmosphere, 1976 (USSA1976) defines the Universal Gas Constant as:
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