A pure silver ring contains 2.10*1022 silver atoms. part a how many moles of silver atoms does it contain?

The number of moles of silver atoms it contain = 0.0349 moles

calculation

by use of Avogadro's law constant

that is 1 mole = 6.02 x10^23 atoms

? = 2.10 x10 ^22 atoms

= (2.10 x10^22 atoms x 1 moles) / (6.02 x10^23 atoms) = 0.0349 moles