The total mass of 20 iron-containing tablets used in nutritional disorders is 22.131 g, and they are ground into powder. The 2,998 g powder sample
The total mass of 20 iron-containing tablets used in nutritional disorders is 22.131 g, and they are ground into powder. The 2,998 g powder sample taken from here was dissolved in HNO 3 and the iron was completely converted into Fe(III). With the addition of NH 3 , Fe(III) ions were precipitated quantitatively. As a result of the heating process, 0.264 g Fe 2 O 3 (MA: 159.69 g/mol) was obtained. Find the amount of FeSO 4 .7H 2 O (MA: 278 g/mol) in each tablet.
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