14. One reaction that is used in the smelting of copper sulphide ores involves copper() oxide
and copper(1) sulphide. These two compounds react to produce copper and sulphur
dioxide.
a) 86.0 g of copper(1) oxide reacts with 46.0 g of copper(1) sulphide. Determine the
mass of copper that is produced.
b) If 98.0 g of copper is recovered, determine the percentage yield.