Solution 1 has a concentration of 1.23e-5 M and an absorbance of 0.871 Solution 2 was prepared by diluting 5 mL of solution 1 with 5 mL of DI water (total volume 10 mL) and this diluted solution was found to have an absorbance of 0.470. Solution 3 was prepared by diluting 1 mL of solution 1 with 9 mL of DI water (total volume 10 mL) and this diluted solution was found to have an absorbance of 0.090.