The number of molecules of Nitrogen dioxide : = 4.816 x 10²⁴
Further explanation
Given
4 moles of Oxygen(O2)
Required
The number of molecules
Solution
Reaction
2NO + O2 ⇒ 2NO2
From the equation, mol NO2 :
= 2/1 x mol O2
= 2/1 x 4 moles
= 8 moles
The number of molecules :
= 8 x 6.02 x 10²³
= 4.816 x 10²⁴