Mass of each silver coin = 5.67 g
Molar mass of silver = 107.87 g/mol
Calculating the moles of silver from given mass and molar mass of silver:
[tex]5.67 g Ag*\frac{1molAg}{107.87g} =0.0526molAg[/tex]
Calculating the atoms of silver in 0.05260 mol using the conversion factor, [tex]1mol=6.022*10^{23}atoms[/tex]:
[tex]0.05260 mol*\frac{6.022*10^{23}atoms }{1mol} =3.17*10^{22}atoms[/tex]
Therefore, [tex]3.17*10^{22}[/tex]atoms of silver are present in each coin.