The number of electrons involved in redox reactions when $1$ Faraday of electricity is passed through an electrolyte in solution is

How many Faraday of electricity is required to deposit $0.8 \ g$ of calcium at cathode by the electrolysis of $CaCl_2$ (in $F$)?

The quantity of electricity in Faraday needed to reduce $1 \ mol$ of $Cr_{2}O_{7}^{2-}$ to $Cr^{3+}$ is ....

$Al_2O_3$ is reduced by electrolysis at low potential and high current. If a current of $4 \times 10^4 \ A$ is passed through molten $Al_2O_3$ for $6 \ h$,how many grams of $Al$ will be produced? (Assume $100\%$ current efficiency and atomic mass of $Al = 27 \ g \ mol^{-1}$)

What volume of chlorine gas (molar mass $71 \ g \ mol^{-1}$) is evolved at $STP$ during electrolysis of fused $NaCl$ by passage of $1 \ A$ current for $965 \ s$ (in $L$)? (At $STP$,$V_m = 22.4 \ dm^3 \ mol^{-1}$)

The amount of substance liberated on electrodes during electrolysis when $1 \ C$ of electricity is passed,is