Estimate the number of electrons capable of conducting an electrical charge in 470 cm^3 of silver.

Question

The density of silver is 10.49 x 10^6 g.m^-3 , and the atomic mass is 107.869 g.mol^-1. Only valence electrons are expected to conduct electrical charge.

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Answer 1

Volume silver = 0.000470 m^3

Mass Silver = 0.000470 m^3 x 10.49 x 10^6 g/m^3 =4930.3 g

Moles silver = 4930.3 g / 107.869 g/mol =45.7

Moles electrons = 45.7

number electrons = 45.7 x 6.02 x 10^23 =2.75 x 10^25