A) The student dissolves the entire impure sample of CuSO4(s)CuSO4(s) in enough distilled water to make 100.mL100.⁢mL of solution. Then the student measures the absorbance of the solution and observes that it is 0.300.30. Determine the concentration of CuSO4(aq)CuSO4(aq) in the solution. b) Calculate the number of moles of CuSO4CuSO4 that were in the impure sample of CuSO4(s)CuSO4(s).

c)In addition to the number of moles of CuSO4CuSO4 calculated in part (b)(b), what other quantity must be measured in order to calculate the mass percentage of CuSO4CuSO4 in the impure sample of CuSO4(s)CuSO4(s)?