(20 points) Plot the following absorbance vs. concentration data in Excel Absorbance, A 0.045 0.097 0.14 0.35 0.51 Molar Concentration, M 3.0x 10 6.2 x 104 9.0 x 10 2.2 x 10 3.2 x 103 Copy the properly formatted graph into this Word document or attach it to this assignment being sure to include the line equation and R value a. b. What is the molar concentration of this substance when its absorbance is 0.23? c. What would you expect the absorbance of a 5.0x 10 M solution to be? d. What would the absorbance of the solution in part c be if the path length was doubled?