Answer is: mass of a single silver atom is 1.79·10⁻²² grams.
m(Ag) = 107.87 amu.
The unified atomic mass unit (amu) is a standard unit of atom mass.
One unified atomic mass unit is approximately the mass of one nucleon (1.66·10⁻²⁷ kg).
m(Ag) = 107.87 · 1.66·10⁻²⁷ kg.
m(Ag) = 1.79·10⁻²⁵ kg · 1000 g/kg.
m(Ag) = 1.79·10⁻²² g.
