How much time is required for complete decomposition of 4 moles of water using 4 ampere?

How much time is required for complete decomposition of two moles of water at anode using 4 amperes current?

Time required for complete decomposition of 4 mol of water using a current of 4 ampere is yxx10^(5) seconds. Value of y is ? (Use F=96500"C mol"^(-1) )

Time required to completely decompose 2 moles of water using a current of 2 amperes is

How much charge is required for the reduction of 1 mole of Cu^(2+) to Cu .

How many moles of O_(2) required for complete combustion of two mole of butane?