Solved: What Mass Of Barium Sulfate (molar Mass = 233 G/mo ...
Apr 10, 2010· for instance: iron III sulfate in your case has 2 iron atoms each of mass 55.845 gm, 3 sulfur atoms each weighs 32.065 gm and 12 (4x3) oxygen atoms of mass 15.9994 gm each. so the molar mass ( which is the molecular mass expressed in grams)** of iron III sulfate would be: 2x55.845 +3x32.065 +12x15.9994-----