A sample of iron ore, weighing 0.700 g, is dissolved in nitric acid. The solution is then, diluted with water, following with sufficient concentrated aqueous ammonia, to quantitative precipitation the iron as Fe(OH)_(3). The precipitate is filtered, ignited and weighed as Fe_(2)O_(3). If the mass of the ignited and dried preciipitate is 0.541 g, what is the mass percent of iron in the original iron ore sample (Fe=56)

A sample of iron ore, weighing 0.700 g, is dissolved in nitric acid. T

1.	A sample of iron ore, weighing 0.700 g, is dissolved in nitric acid. The solution is then, diluted with water, following with sufficient concentrated aqueous ammonia, to quantitative precipitation the iron as Fe(OH)_(3). The precipitate is filtered, ignited and weighed as Fe_(2)O_(3). If the mass of the ignited and dried preciipitate is 0.541 g, what is the mass percent of iron in the original iron ore sample (Fe=56)
Answer» `27.0 %` `48.1 %` `54.1%` `81.1 %` ANSWER :C