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A 1.787 g sample containing some Fe+2 ion requires 31.50 ml of a 0.02188 m K MNO4 solution to reach a stable pink end point. What is the percent by mass of Fe2+ in this sample?
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A metal slug weighing 16.32g is added to a flask with a volumeof 52.6 mL. it is found that, 40.2 g of methanol (d = 0.791 g/mL)must be added to the metal to fill the flask. What is the density of the metal in g/mL?
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