Hello, Im in desperate need of help with setting up this problem and I would very much appreciate being steered in the right direction. 1. The problem statement, all variables and given/known data Find the mass percent of Fe3+ in a 0.0293g sample of iron ore if 13.25 ml of a .200 M stannous chloride solution is required to react completely with Fe3+. 2. Relevant equations 2 Fe3+(aq) + Sn2+(aq) ⇒2Fe2+(aq)+Sn4+ is the net ionic equation provided 3. The attempt at a solution So I am trying to find M of Fe3+ so g Fe3+→mol Fe/g Fe→mol Fe/mol SnCl2→.200molSnCl2/1L ......etc Sorry I dont really know how to represent a dimensional analysis problem. Basically I am trying to end up with mol/L to calculate the molarity for Fe3+ but I have a strong suspicion that I am attempting this problem in the wrong way. I have tried to rework this problem several times sometimes starting with the 13.25ml but I am ending up at a dead end every time. Any help or advice is sincerely appreciated.