Gas constant
Gas constant
<table><thead><tr><th>Value of R</th><th>Unit</th></tr></thead><tbody><tr><td>SI units</td></tr><tr><td>8.31446261815324</td><td>J⋅K−1⋅mol−1</td></tr><tr><td>8.31446261815324</td><td>m3⋅Pa⋅K−1⋅mol−1</td></tr><tr><td>8.31446261815324</td><td>kg⋅m2⋅s−2⋅K−1⋅mol−1</td></tr><tr><td>Other common units</td></tr><tr><td>8314.46261815324</td><td>L⋅Pa⋅K−1⋅mol−1</td></tr><tr><td>8.31446261815324</td><td>L⋅kPa⋅K−1⋅mol−1</td></tr><tr><td>0.0831446261815324</td><td>L⋅bar⋅K−1⋅mol−1</td></tr><tr><td>8.31446261815324×107</td><td>erg⋅K−1⋅mol−1</td></tr><tr><td>0.730240507295273</td><td>atm⋅ft3⋅lbmol−1⋅°R−1</td></tr><tr><td>10.731577089016</td><td>psi⋅ft3⋅lbmol−1⋅°R−1</td></tr><tr><td>1.985875279009</td><td>BTU⋅lbmol−1⋅°R−1</td></tr><tr><td>297.031214</td><td>inH2O⋅ft3⋅lbmol−1⋅°R−1</td></tr><tr><td>554.984319180</td><td>torr⋅ft3⋅lbmol−1⋅°R−1</td></tr><tr><td>0.082057366080960</td><td>L⋅atm⋅K−1⋅mol−1</td></tr><tr><td>62.363598221529</td><td>L⋅torr⋅K−1⋅mol−1</td></tr><tr><td>1.98720425864083...</td><td>cal⋅K−1⋅mol−1</td></tr><tr><td>8.20573660809596...×10−5</td><td>m3⋅atm⋅K−1⋅mol−1</td></tr></tbody></table>
Gas constant
!Heating gas at constant pressure and constant-volume
Gas constant
The molar gas constant (also known as the gas constant, universal gas constant, or ideal gas constant) is denoted by the symbol R or R. It is the molar equivalent to the Boltzmann constant, expressed in units of energy per temperature increment per amount of substance, rather than energy per temperature increment per particle. The constant is also a combination of the constants from Boyle's law, Charles's law, Avogadro's law, and Gay-Lussac's law. It is a physical constant that is featured in many fundamental equations in the physical sciences, such as the ideal gas law, the Arrhenius equation, and the Nernst equation.
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