The British gold sovereign coin is an alloy of gold and copper containing a net mass of 7.988 g, and is 22-karat gold.
(i) Determine the mass of gold in the sovereign in kilograms by using the fact that the number of karats = 24 (mass of gold)/(net mass).
(ii) Compute the volumes of gold and copper, correspondingly, employed to manufacture the coin.
(iii) Compute the density of the British sovereign coin.