Respuesta :

  • 1 mol of any compound contains 6.023×10^23 molecules
  • 1 mol of water also contains same.

40 .ol of water contains:-

[tex]\\ \rm\Rrightarrow 40(6.023\times 10^{23})[/tex]

[tex]\\ \rm\Rrightarrow 240.92\times 10^{23}[/tex]

[tex]\\ \rm\Rrightarrow 2.41\times 10^{21} molecules [/tex]