Given the mass of one atom is , m = 5.88x10-23 g
The mass of 6.023x1023 atoms is = M =
mx6.023x1023
                                                       Â
= 5.88x10-23 gx6.023x1023
                                                      Â
= 35.4 g
We know that 1 mole of any substance contains avagadro
number(6.023x1023) of atoms.
So the atomic mass of element is the mass of avagadro number of
atoms is 35.4amu
