A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets weighing a total of 13.7421 g was turned into fine powder. A scoop of this powder weighing 2.7544 g was then dissolved and precipitated as Fe(OH)3 which was then rinsed and ignited to a constant weight as Fe2O3 (159.69 g/mol). The recorded constant weight of Fe2O3 is 0.2629 g. a. What is the %Fe (55.85 g/mol) content of the supplement? b. What is the iron content of the supplement reported as g FeSO4∙7H2O (277.908 g/mol) per tablet?
A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets weighing a total of 13.7421 g was turned into fine powder. A scoop of this powder weighing 2.7544 g was then dissolved and precipitated as Fe(OH)3 which was then rinsed and ignited to a constant weight as Fe2O3 (159.69 g/mol). The recorded constant weight of Fe2O3 is 0.2629 g. a. What is the %Fe (55.85 g/mol) content of the supplement? b. What is the iron content of the supplement reported as g FeSO4∙7H2O (277.908 g/mol) per tablet?
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter22: The Chemistry Of The Transistion Elements
Section22.6: Colors Of Coordination Compounds
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A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets
weighing a total of 13.7421 g was turned into fine powder. A scoop of this powder weighing
2.7544 g was then dissolved and precipitated as Fe(OH)3 which was then rinsed and ignited to a
constant weight as Fe2O3 (159.69 g/mol). The recorded constant weight of Fe2O3 is 0.2629 g.
a. What is the %Fe (55.85 g/mol) content of the supplement?
b. What is the iron content of the supplement reported as g FeSO4∙7H2O (277.908 g/mol)
per tablet?
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