Respuesta :

Mistystar4881

Hey there!

1 mol has 6.022 x 10²³ molecules.

If we have 4.2 mol F₂, multiply the number of molecules in 1 mol by 4.2.

4.2 x 6.022 x 10²³

2 sig figs

25 x 10²³

Put this properly into scientific notation.

2.5 x 10²⁴ molecules of F₂

Hope this helps!

samueladesida43

There are 2.53 × 10²⁴ molecules of F2 in 4.2 moles of F2.

HOW TO CALCULATE NUMBER OF MOLECULES:

  • The number of molecules in a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number. That is:

  • no. of molecules = no. of moles × 6.02 × 10²³

  • no. of molecules = 4.2 × 6.02 × 10²³

  • no. of molecules = 25.3 × 10²³

  • no. of molecules = 2.53 × 10²⁴ molecules of F2

  • Therefore, there are 2.53 × 10²⁴ molecules of F2 in 4.2 moles of F2.

Learn more at: https://brainly.com/question/19556990?referrer=searchResults

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