1. A student has 100. mL of 0.400 CUSO4(aq) and is asked to make 100. mL of 0.150 M CUSO4(aq) for a spectrophotometry experiment. a. Calculate the volume of 0.400

M CuSO4(aq) required for the preparation. b. The spectrophotometer available to the student has a wavelength range of 400 nm to 700 nm. Whatwavelength should the student use to minimize the interference from the presence of the Co 2+Tions?(aq) The student plans to conduct a spectrophotometric analysis to determine the concentration of Cu2+(aq) ina solution. The solution has a small amount of Co(NO3)2(aq) present as a contaminant. The student is given the diagram below, which shows the absorbance curves for aqueous solution of Co2+(aq) and Cu2+(aq).