Question

023 x 10^20 atoms silver atomic mass =108u weight is

Answer 1

no.of moles=no.of particles. equation 1)
---------------------
Avogadro number

no.of moles =wight of element/molar mass. equation 2)

let equate both equations;

no.of particles weight of element
-------------------- = -------------------------
Avogadro no. Molar mass

put values,

23×10^20/6.022×10^23=weight of element/108

2484×10^20/6.022×10^23=weight of element

412.48 × 10^-3g= weight of element

hope it helps!

Answer 2

weight of silver is 412.48×10^-3 gram