What is the number of moles of electrons passed when a current of $5 \ A$ is passed through a solution of $FeCl_3$ for $20 \ minutes$?
- A$6.25 \times 10^{-2}$
- B$1.56 \times 10^{-2}$
- C$3.12 \times 10^{-2}$
- D$4.25 \times 10^{-2}$
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