Chemistry

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?

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asked by P
  1. figure the percent iron in Fe2O3..

    percent= 2*atomicmassFe/formulamassFe2O3

    then, percent in the sample

    = percentabove*.3210/.5962

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