What is the reason for calibrating the UV spectrophotometer with distilled water? To check if the spectrophotometer works correctly. To determine the maximum absorption wavelength (max). To predict which color the CuSO4 solution will absorb based on the color wheel. To obtain accurate absorbance measurements. 4 points Why is it necessary to plot a calibration curve for the standard solutions? 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. To obtain a linear equation of the line, which is used to calculate the concentration of CuSO4 in the unknown sample. 2 points From the equation of the line, what two values can be obtained from the slope? Molar absorptivity () and path length (I). Absorbance (A) and molar absorptivity (). max and absorbance. Path length (I) and max. 4 points 152.0 mL of a 7.8MAgNO3 solution was diluted to 259.1mL. Calculate the final concentration of this solution. Type your answer... 4 points A calibration curve gives a slope of 39.3M1. If the path length equals 4.6cm, calculate the molar absorptivity ()M1cm1. Round your answer to 1DECIMAL PLACE. Type your answer... 4 points your answer to 1 DECIMAL PLACE. Type your