A 0.5962g sample of iron ore is dissloved in acid producing Fe3+. Though a series of reactions, the iron precipitates as the Fe(OH)3. The precipitates is heated, forming solid Fe2O3. What is the mass % of iron in the sample if the analysis produced 0.3210g Fe2O3?

Question

A 0.5962g sample of iron ore is dissloved in acid producing Fe3+.  Though a series of reactions, the iron precipitates as the Fe(OH)3.  The precipitates is heated, forming solid Fe2O3. What is the mass % of iron in the sample if the analysis produced 0.3210g Fe2O3?

bobpursley · Answer

figure the percent iron in Fe2O3.. percent= 2*atomicmassFe/formulamassFe2O3 then, percent in the sample = percentabove*.3210/.5962