Question

How many faradays of electricity will be required by $3\times {10}^{12}$ electrons?

Answer 1

Moles of electrons= $\frac{3\times {10}^{12}}{6.02\times {10}^{23}}=4.98\times {10}^{-12}$

$1$ mole of electron require $1$ Faradays of electricity

$\therefore 4.98\times {10}^{-12}$ Faradays of electricity is required.