How many coulombs are provided by a current of $0.010 \ mA$ in the calculator battery that can operate for $1000 \ hours$?

Which of the following elements is extracted industrially by the electrolysis of its aqueous solution?

Predict the products of electrolysis in each of the following:
$(i)$ An aqueous solution of $AgNO_3$ with silver electrodes.
$(ii)$ An aqueous solution of $AgNO_3$ with platinum electrodes.
$(iii)$ $A$ dilute solution of $H_2SO_4$ with platinum electrodes.
$(iv)$ An aqueous solution of $CuCl_2$ with platinum electrodes.

When an electric current is passed through a cell containing an electrolyte,positive ions move towards the cathode and negative ions move towards the anode. If the cathode is removed from the solution,what will happen?

On passing electric current in an electrolyte solution,$H_2$ gas is liberated at the cathode. Then the electrolyte could be:

If a current of $0.5 \ A$ flows through a metallic wire for $2 \ hours$,then how many electrons would flow through the wire?