Bornitic Ore Copper Flotation Difficulties

Bornite cu3fes3 is a copper ore used in the.Bornite cu3fes3 is a copper ore used in the production copper.When heated the following reaction occurs 2cu3fes3s 7o2g if 2.50 metric tons of bornite is reacted with excess o2 and the process has an 86.3 yield of copper, how much copper is produced.