A 10.0-mL aliquot of a standard manganese solution containing 62.5 mg/L of Mn is oxidized to MnO4- and diluted to 50.0 mL in a volumetric flask.  The absorbance is measured in a 1.00-cm cell at 525 nm is 0.343.  Next, a 850-mg steel sample containing manganese in dissolved in acid and diluted to 250 mL.  A 50.0-mL aliquot is treated with KIO4 to oxidize Mn to MnO4- and diluted to 100.0 mL.  If the absorbance at 525 nm is 0.468 in a 1.00-cm cell, calculate the weight percent of Mn in the steel

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