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What is the concentration of zn2

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Reference no: EM132732414

We read the absorbance of an unknown Zn2+ solution and find 0.457 by AAS at the Zn wavelength. 20.0 mL of that unknown solution is spiked with 3.00 mL of 250 ppm Zn2+ resulting in a solution with an absorbance of 0.722 under the same conditions. What is the concentration of Zn2+ in the unknown?

Reference no: EM132732414

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