A mixture contains only NaCl and Fe(NO3)3. A 0.456g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is filtered, dried, and weighed. Its mass is 0.107g.
1. Calculate the mass of iron in the sample.
2. Calculate the mass of Fe(NO3)3 in the sample
3. Calculate the mass percent of Fe(NO3)3 in the sample