Assume that impure copper contains only math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_...

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Assume that impure copper contains only math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymiFe/mi/math, math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymiAu/mi/math and \( \mathrm{Ag} \) as impurities. After passage of math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn140/mn/math ampere for \( 482.5 \mathrm{sec} \), the mass of anode decreased by \( 22.260 \mathrm{~g} \) and the cathode increased in mass by \( 22.011 \mathrm{~g} \). Calculate the percentage of iron and percentage of copper originally present.
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