Respuesta :

Answer:

19.9 moles

Explanation:

Each mole has 6.02 x 10^23 many atoms. This number is commonly known as "Avogadro's Number."

In this problem, we have 1.2 x 10^25 atoms of phosphorus.

Thus, (1.2 x 10^25)/(6.02 x 10^23) is the number of moles in 1.20 x 10^25 many atoms of phosphorus.

(1.2(10^25))/(6.02(10^23))

19.9 moles.

The moles are 19.9 moles

  • The calculation is as follows:

Each mole has [tex]6.02 \times 10^{23}[/tex] many atoms.

This number is commonly known as "Avogadro's Number."

In this given question, we have [tex]1.2 \times 10^{25}[/tex] atoms of phosphorus.

So [tex](1.2 \times 10^{25})\div (6.02 \times 10^{23})[/tex]is the number of moles in[tex]1.20 \times 10^{25}[/tex] many atoms of phosphorus.

Now  

[tex](1.2(10^{25}))\div (6.02(10^{23}))[/tex]

19.9 moles.

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