A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass percent of Fe in the compound is 0.330% Fe, what is the molar mass of the protein?

Answer 1

mass % = mass of interest/total mass (x100%)

0.00330 = mass of Fe/total mass

0.00330 = 55.85/total mass

total mass = 16,900

Check:

1 atom of Fe = 55.85

total protein = 16,900

mass % Fe = 55.85/16,900 (x100%) = 0.33%