An electrochemical cell an behave like an electrolytic cell when

In an electrolytic cell, one liter of 1M aqueous solution of MnO${{}_4}^{-}$ is reduced to MnO${{}_4}^{-2}$ at a cathode. How many faradays would be required so that the solution becomes 0.899M $Mn{O}_4^{-}$:

An ammeter reading shows a current of 0.50 A running through the iron hull. How many grams of $Fe(s)$ are lost in 1.0 hour?