(mu X 4. and make mall Answer the following questions using the information provided. You obtained the following calibration curve by analyzing a series of chloride standards of known concentration. These standards were prepared by using sodium chloride (NaCl). An unknown chloride sample was prepared by diluting 5.0 mL of the original sample and diluting to 50.0 mL with diluent. You analyzed this solution and found that it had an absorbance reading of 0.18. cell width = 1 cm Wavelength -410 nm MW of C1 - 35.45 g/mol MW of Na = 22.99 g/mol 0.3 0.25 0.2 Absorbance 0.15 0.1 0.05 0 0 15 20 on 10 Concentration of chloride (M) molarity of NaCl (4 marks) > c) Calculate the concentration of the original unknown chloride solution in terms of Nad molarity moles solute mass or sowtion d) You analyzed another chloride sample and found that it had an absorbance reading of 0.26. Since this result is not reliable, what could you do to resolve this situation? (i.e. make the absorbance read within the working range of the standard) (2 marks) Absorbance = 0.26 - If the result is not reliable then the absorbance can done once againy - Prepare the sample another time. O