Respuesta :

#21

Molecular mass of Water=18g

[tex]\\ \sf\longmapsto No\:of\:moles=\dfrac{Given\:mass}{Molar\:mass}=\dfrac{54}{18}=3mol[/tex]

Now

  • H has no neutrons hence one mol of water contain 8×Avagadros no of neutrons of Oxygen.
  • 3mol of water will contain 3(8)=24×6.022×10^22 =1.806×10^25neutrons

ranjitamajhi

Answer:

calculate no of electron in one molecules of water. Formula is H2O so 2 electron from hydrogen and 10 electron from oxygen. This gives 10 electron from oxygen in a single molecules of H2O ( Water)

Explanation:

So no of electron in 54 ml water is equal to 18×10^23×10=18×10^24

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