Question

10 atoms of an elments 'x' are found to have mass of 930 mg .calculate the molar mass of the elements 'x'.

Answer 1

1 mole  = 6.022 × 1023 atoms

Number of moles = Given mass / Molar mass

Molecular mass = ​Given massAvagadro number×Given atoms

                               =    0.930 g×6.022 ×1023/1022

                              =   5.6×10 g