Respuesta :
There are 0.00135 moles in [tex]8.11*10^{20}[/tex] molecules of CH4.
The number of molecules in 1 mole of any compound = [tex]6.02*10^{23}[/tex] molecules.
This number is called Avogadro's number.
The same goes for CH4. It also contains [tex]6.02*10^{23}[/tex] molecules in 1 mole.
So, for [tex]8.11*10^{20}[/tex] molecules, the number of moles would be:
[tex]n=\frac{8.11*10^{20}}{6.02*10^{23}} \\\\n=0.00135[/tex] moles of CH4.
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