Question

how many coulombs of charge are involved in a chemistry experiment in which 4 × 1024 electrons pass into a solution of silver chloride.

Answer 1

$1electron=1.6\times10^{-19}C$

So, $4\times10^{24}electrons=6.4\times10^5C$

Hence, $6.4\times10^5C$ pass into the solution of silver chloride.