Find the number of atoms in 48 g of ozone at NTP.

MW of ozone = 48 g/mole

 

So, in 48 g ozone, No of moles = 48/48 = 1 mole

 

1 mole ozone has 6.022 x 10²³ molecules of ozone.

 

1 molecule of ozone has 3 atoms of oxygen.

So, there will be 3 x 6.022 x 10²³ atoms = 1.806 x 10²⁴atoms