Question: 4 points Why is it necessary to plot a calibration curve for the standard solutions? To obtain a linear equation of the line, which is

4 points Why is it necessary to plot a calibration curve for the standard solutions? To obtain a linear equation of the line, which is used to calculate the concentration of CuSO4 in the unknown sample. To determine the uncertainty () in the absorbance measurements for each solution. To determine the maximum absorption wavelength (max). To confirm that the absorbance varies inversely with the concentration according to Beer's Law

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