gázállandó
The ideal gas constant, symbolized by R, is a fundamental physical constant that appears in many basic equations of physics and chemistry, most notably the ideal gas law. It relates the energy scale to the temperature scale and the amount of substance. The ideal gas law, PV = nRT, describes the relationship between pressure (P), volume (V), the amount of substance (n), the ideal gas constant (R), and temperature (T) for an ideal gas.
The value of the ideal gas constant depends on the units used for pressure, volume, and temperature.
The ideal gas constant is also known as the molar gas constant or the universal gas constant.