Which mass of urea, co(nh2)2, contains the same mass of nitrogen as 101.1 g of potassium nitrate? a 22g b 30g c 44g d 60g

If 15.6 grams of iron (iii) oxide reacts with 12.8 grams of carbon monoxide to produce 9.58 g of pure iron, what are the theoretical yield and percent yield of this reaction? be sure to show the work that you did to solve this problem. unbalanced equation: fe2o3 + co yields fe + co2