Respuesta :

Answer:

the number of chlorine  molecules  in  6.5  moles  of  chlorine  is  calculated  as  follows

by  use  of Avogadro  constant  that  is  1mole =  6.02  x10^23    molecules

what  about  6.5  moles

6.5  x  (  6.02x 10^23)=  3.913  x10^24

6.5 moles of chlorine contain [tex]78.299\times 10^{23}[/tex] molecules.

What is mole?

"A measured amount of any element that equals the mass in grams of that element is called a mole. "

What is Avogadro's number?

"the number of molecules in one mole of a substance, equal to [tex]6.023 \times 10^{23}[/tex]"

For given question,

We need to find the number of chlorine molecules in 6.5 moles of chlorine.

We know that a number of molecules in one mole of a substance, equal to [tex]6.023 \times 10^{23}[/tex]

But each molecule of chlorine gas contains two atoms.

So, one mole of chlorine gas contains twice Avogadro's number.

1 mole of chlorine = [tex]2\times 6.023 \times 10^{23}[/tex] molecules

So,  6.5 moles of chlorine would contain,

[tex]6.5\times 2\times 6.023 \times 10^{23}\\\\= 78.299\times 10^{23}[/tex]molecules

Therefore, 6.5 moles of chlorine contain [tex]78.299\times 10^{23}[/tex] molecules.

Learn more about Avogadro's number here:

https://brainly.com/question/1445383

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