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Click equation to show only symbol neutron molar mass  Numerical value  1.008 664 915 60 x 10-3 kg mol-1  Standard uncertainty  0.000 000 000 57 x 10-3 kg mol-1   Relative standard uncertainty  5.7 x 10-10  Concise form  1.008 664 915 60(57) x 10-3 kg 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