Some Important Relations Regarding Moles Of Atoms

SOME IMPORTANT RELATIONS REGARDING MOLES OF ATOMS

•  Mass of 1 mole of atoms = Gram atomic mass
• 1 mole of atoms = 6.023 × 10- atoms
• Gram atomic mass = Mass of 6.023 × 1023 atoms

Ex. To calculate the number of moles in 16 grams of sulphur (Atomic mass of sulphur=32u).

Solution:  1 mole of atoms = Gram atomic mass.

So, 1 mole of sulphur atoms = Gram atomic mass of sulphur = 32 grams.

Now, 32 grams of sulphur contains = 1 mole of sulphur

So, 16 grams of sulphur will contain = (1/32) × 16

            = 0.5 mole

Thus, 16 grams of sulphur constitute 0.5 mole of sulphur.

Mole is the Latin word meaning heap or pile.