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Click symbol for equation atomic mass unit-joule relationship  Value  1.492 417 830 x 10-10 J  Standard uncertainty  0.000 000 074 x 10-10 J   Relative standard uncertainty   5.0 x 10-8  Concise form  1.492 417 830(74) x 10-10 J       Click here for correlation coefficient of this constant with other constants Source: 2006 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant