From: '''newspam'''@nonad.co.uk   
      
   On 19/12/2020 18:52, casagiannoni@optonline.net wrote:   
   > Ever so slightly different values are quoted in various references.   
   > The value I use is one seen  frequently, 6.02214076 E23 . Other   
   > perceptions ?   
      
   Unless you are doing something very unusual it makes little difference   
   beyond 4 sig fig.   
      
   Physicists care about it when calibrating the C12 mass scale and ion   
   counting in mass spectrometry. Chemists tend to just use their results.   
      
   --   
   Regards,   
   Martin Brown   
      
   --- SoupGate-Win32 v1.05   
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