Calculate the number of `kw-h` of electricity is necessary to produce `1.0` metric ton `(1000 kg)` of aluminium by the Hall process in a cell operating at `15.0 V`.

Calculate the number of moles in the following masses : (i) 1.46 metric tons of Al (1 metric ton = 10^3 kg)

Calculate the number of kJ of heat necessary to raise the temperature of 60.0 g of aluminium from 35^@C" to " 55^@C . Molar heat capacity of Al is 24 J mol^(-1) K^(-1) .

Calculate the number of moles in the following masses: (i) 1.46 metric tones of Al (1 metric ton =10^(3) kg ) (ii) 7.9 mg of Ca