Calculate The Molar Mass Of Iron Iii Sulfat

Apr 11, 2010 best answer first of all the molar mass of a compound is obtained by multiplying the atomic mass of each element by the number of its atoms in the compound for instance iron iii sulfate in your case has 2 iron atoms each of mass 555 gm, 3 sulfur atoms each weighs 325 gm and 12 4x3 oxygen atoms of mass 1594 gm each.