One of the reactions involved in the smelting of copper sulfide ores involves copper (I) oxide and copper (I) sulfide: 2Cu2O2 + Cu2S ---> 6Cu + SO2

Question

Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I) sulfide
A) determine which reagent is present in excess
B) calculate the theoretical yield of copper
C) determine the percentage yield if 35.46 g of copper is actually isolated

My work
A) Cu2O = 0.2446
Cu2S = 0.1571
Not sure how to do B) and C)

Answer 1

http://www.jiskha.com/display.cgi?id=1417920941