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1. A 25.0-mL sample containing Cu2 gave an instrument signal of 25.2 units (corrected for a blank). When exactly 0.500 mL of 0.0275 M Cu(NO3)2 was added to the solution, the signal increased to 45.1 units. Calculate the molar concentration of Cu2 assuming that the signal was directly proportional to the analyte concentration.
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1. A 25.0-mL sample containing Cu2 gave an instrument signal of 25.2 units (corrected for a blank)....
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