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Magnetite is a mineral having the formula Fe3O4 or FeOFe2O3. A 1.1324-g sample of a magnetite ore was dissolved in concentrated HCl to give a solution that contained a mixture of Fe2+ andFe3+. Nitric acid was added and the solution was boiledfor a few minutes, which converted all of the iron toFe3+. The Fe3+ was then precipitated asFe2O3xH2O by addition ofNH3. After filtration and washing, the residue wasignited at a high temperature to give 0.5394 g of pureFe2O3 (159.69 g/mol). Calculate (a) the percent Fe (55.847 g/mol) and (b) the percentFe3O4 (231.54 g/mol) in the sample.
Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..
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