The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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molar volume of ideal gas (273.15 K, 100 kPa)
 $ V_{\rm m} = RT/p \quad (273.15\,{\rm K}, \, 100\,{\rm kPa}) $
 Numerical value  22.710 954 64...  x 10-3 m3 mol-1
 Standard uncertainty  (exact)
  Relative standard uncertainty  (exact)
 Concise form  22.710 954 64... x 10-3 m3 mol-1    
 
Click here for correlation coefficient of this constant with other constants
Source: 2018 CODATA     
recommended values 		 Definition of
uncertainty 		      Correlation coefficient with
any other constant

 
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