# Answer on Other Chemistry Question for Bob

Question #20473

How many moles of silver atoms are in 1.8 * 10^20 atoms of silver?

Expert's answer

N - number of atoms

Na- Avogadro Constant

n-amount of element (compound) with some Molecular weight ( Mw )

n=N*Mw / Na.

Using this formula or trivial equation below

&

n 1.8x10^20

& Ag------->Ag

108 & 6.02x10^-23

n=108*1.8^20 / 6.02x10^23=0.0323 moles

Na- Avogadro Constant

n-amount of element (compound) with some Molecular weight ( Mw )

n=N*Mw / Na.

Using this formula or trivial equation below

&

n 1.8x10^20

& Ag------->Ag

108 & 6.02x10^-23

n=108*1.8^20 / 6.02x10^23=0.0323 moles

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