How many molecuels and atoms of oxygen are present in 5.6 litres of oxygen `(O_(2))` at NTP.

Explanation

We know that 22.4 litres of oxygen at NTP contain `6.02xx10^(23)` molecules of oxygen.
So, 5.6 litres of oxygen at NTP contain.
`=(5.6)/(22.4)xx6.02xx10^(23)` molecuels ltbr. `=1.505xx10^(23)` molecules
1 molecule of oxygen contain=2 atoms of oxygen.
So, `1.505xx10^(23)` molecules of oxygen contain.
`=2xx1.505xx10^(23)` atoms ltbr. `=3.01xx10^(23)` atoms.