A 50.0 mg sample was dissolved in acid and then diluted to a total volume of 50.00 mL. If 1.000 mL of this solution was then diluted to 50.00 mL with water. If this diluted solution had a transmittance of 0.275 at 520 nm, what is the concentration of KMnO4 in ppm in this diluted solution, assuming no interference from other species at this wavelength?

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