Question

Calculate the number of molecules and number of
atoms present in 11.2 litres of oxygen (0,) at N.T.P.
​

Answer 1

Hi Bro

First calculate number of moles

n=11.2/22.4=0.5

now molecules =0.5×6.022×10^23= 3×10^23 molecules

Number of atoms =2×3×10^23= 6×10^23

hope you understood

Answer 2

22.4ltr is 1 mole O2 molecules

so

11.4ltr is half mole O2 molecules

and half mole O2 molecules has 2* half= 1 mole O atoms

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