Respuesta :

  • No of moles=0.75

No of molecules:-

  • No of moles ×Avagadro no

[tex]\\ \rm\rightarrowtail 0.75(6.022\times 10^{23})[/tex]

[tex]\\ \rm\rightarrowtail 4.5165(10^{23}) molecules[/tex]

The number of KNO₃ molecules present in 0.750 mole of KNO₃ is 4.5×10²³.

What is Avogadro's number?

Avogadro's numbers are those numbers which tells about the number of atoms present in one mole of any substance and it is equal to the 6.022 × 10²³.

Given moles of KNO₃ = 0.75 mole

No.of molecules of KNO₃ in given moles = 0.75 × 6.022 × 10²³ = 4.5×10²³

Hence required number of molecules are 4.5 × 10²³.

To know more about Avogadro's numbers, visit the below link:

https://brainly.com/question/20091306

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