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Problem- A student prepares a series of standard NiS04 (Nickel Sulfate), M. The student then measures the absorbance of an unknown copper sulfate solution (CuSO4). What would he need to determine the concentration of the unknown CuSO4 solution? I know that NiSO4 and CuSo4 are seen in a different spectrum or wavelength how would this affect the answer if at all?

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