<P> Relative atomic mass is determined by the average atomic mass , or the weighted mean of the atomic masses of all the atoms of a particular chemical element found in a particular sample , which is then compared to the atomic mass of carbon - 12 . This comparison is the quotient of the two weights , which makes the value dimensionless ( no unit appended ) . This quotient also explains the word relative : the sample mass value is made relative to carbon - 12 . </P>
<P> Relative atomic mass is determined by the average atomic mass , or the weighted mean of the atomic masses of all the atoms of a particular chemical element found in a particular sample , which is then compared to the atomic mass of carbon - 12 . This comparison is the quotient of the two weights , which makes the value dimensionless ( no unit appended ) . This quotient also explains the word relative : the sample mass value is made relative to carbon - 12 . </P>
which isotope is used as relative scale to find atomic mass
which isotope is used as relative scale to find atomic mass
carbon - 12
carbon - 12