Respuesta :

Neetoo

Answer:

53.11× 10²³ molecules

Explanation:

Given data:

Number of molecules of CO₂ = ?

Mass of CO₂ = 388.1 g

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of CO₂ = 12× 1 + 16×2

Molar mass of CO₂ = 44 g/mol

Now we will put the values in formula.

Number of moles = 388.1 g/ 44 g/mol

Number of moles = 8.82 moles

Now we will calculate the number of molecules by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

8.82 mol × 6.022 × 10²³ molecules / 1 mol

53.11× 10²³ molecules

Cricetus

The number of molecules present will be "53.11× 10²³".

Given:

  • Weight of compound = 388.1 gm

We know,

  • Molecular mass = 44
  • 1 mole = [tex]6.022\times 10^{23}[/tex] molecules

Now,

→ [tex]mole = \frac{Weight}{Molecular \ mass}[/tex]

           [tex]= \frac{388.1}{44}[/tex]

hence,

The number of molecules,

= [tex]388.1\times 6.022\times 10^{23}[/tex]

= [tex]53.11\times 10^{23}[/tex]   molecules

Thus the response above is right.

Learn more about molecules here:

https://brainly.com/question/19114101

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