How long will it take to produce $5.4 \ g$ of $Ag$ from molten $AgCl$ by passing $5 \ A$ current (in $s$)? (Molar mass $Ag = 108 \ g \ mol^{-1}$)

Two electrolytic cells are connected in series containing $CuSO_4$ solution and molten $AlCl_3$. If in electrolysis $0.4$ moles of $Cu$ are deposited on the cathode of the first cell,the number of moles of $Al$ deposited on the cathode of the second cell is: (in $moles$)

In order to separate oxygen from one mole of $H_2O$,the required quantity of electricity in coulombs is:

How many faradays of electricity is required to produce $4.8 \ g$ of $Mg$ at cathode in the electrolysis of molten $MgCl_2$ (in $F$)? (Molar mass of $Mg = 24 \ g/mol$)

How many atoms of calcium will be deposited at the cathode when a current of $25 \ mA$ is passed through a $CaCl_2$ solution for $60 \ s$?

$96500 \ C$ of electric charge liberates how many grams of $Cu$ from $CuSO_4$ solution?