Explain when a 1.150 g sample of iron ore is treated with 50.0 ml of HCL the iron dissolves in the acid to form a solution of FeCl3. The FeCl3 solution is diluted to 100.0 ml as well as the concentration of Fe3+ ions is determined by spectrometry to be 0.095 mol*L^-1. Mass% of iron in the ore?