An iron ore contains 37% Fe_2O_3 by mass. What is the maximum mass of iron that can be recovered from 14.2kg?
mass of Fe2O3 in ore 14.2 x 37/100 5.254 kg mass Fe2O3 (56 x 2) + (16 x 3) 112 + 48 160 so 160 kg of Fe2O3 contains 112 kg Fe so 5.254 kg of Fe2O3 contains 112/160 x 5.254 kg Fe answer
