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The concentration of copper in a satnple of sea water is determined by anodic stripping voltammetry using the method of standard additions. When a 50.0-ml sample is analyzed, the peak current is 0.886μA. A 5.00-μl spike of 10.0μg/ml Cu 2+ is adoied, giving apeak current of 2.52μA. Calculate concentration of copper in the sample 0f sea water.