The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants
Constants
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Constants,
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Uncertainty
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molar gas constant
 $ R = N_{\rm A}k$
 Numerical value  8.314 462 618... J mol-1 K-1
 Standard uncertainty  (exact)
  Relative standard uncertainty  (exact)
 Concise form  8.314 462 618... J mol-1 K-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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