Problem- Need help with a lab I did this week. 2 mL of mountain dew was mixed with 10 mL of 0.10 HCl and then diluted to 100 mL with DI water. At wavelength 230 nm the absorbance was 0.767 and at 269 nm the absorbance was 0.243. By making calibration curves of standards I was able to determine that the molar absorptivity of caffeine at 230 nm is 0.0521 and at 269 nm it is 0.0926. It was also determined that the molar absorptivity of benzoic acid at 230 nm is 0.0883 and at 269 nm it is 0.0094. I need to determine the mg of each component in a 20 oz bottle of Mountain dew.
I am not able to get the correct answer please help me