Respuesta :
The Avogadro number represents the number of units in one mole of a chemical substance.
So to find the mole number of a chemical element, you divide its atom number of the Avogadro number which Na = 6.02*10^23 approx.
So n=N/Na (n=mole number, N=number of atoms, Na=Avogadro number)
n=1.0*10^15/6.02*10^23
n=1.6 * 10^-9
So 1.0*10^15 atoms of Sodium represent 1.6*10^-9 mol.
Hope this Helps! :)
So to find the mole number of a chemical element, you divide its atom number of the Avogadro number which Na = 6.02*10^23 approx.
So n=N/Na (n=mole number, N=number of atoms, Na=Avogadro number)
n=1.0*10^15/6.02*10^23
n=1.6 * 10^-9
So 1.0*10^15 atoms of Sodium represent 1.6*10^-9 mol.
Hope this Helps! :)
Answer:
The moles of sodium are [tex]1.6606\times 10^{-9} moles[/tex].
Explanation:
Moles of sodium = n
Number of atoms of sodium , N = [tex]1.0\times 10^{15} [/tex]
[tex]N=n\times N_A[/tex]
Where ,[tex]N_A= 6.022\time 10^{23} mol^{-1} [/tex] atoms/ molecules (Avogadro number)
[tex]n=\frac{N}{N_A}=\frac{1.0\times 10^{15}}{6.022\time 10^{23} mol^{-1}}[/tex]
n = [tex]1.6606\times 10^{-9} moles[/tex]
The moles of sodium are [tex]1.6606\times 10^{-9} moles[/tex].
