The absorbance values of solutions of known NaC7H5O3 concentration were calculated. The plot of concentration vs absorbance was linear with a slope of 1681 L/mol. A 0.0443 g sample of aspirin was treated with the NaOH and diluted to 100.00 mL. A5.00 mL portion of this sample was treated with the Fe(NO3)3 and used to prepare 25.00 mL of solution. This sample had an absorbance of0.752. Calculate the concentration (mol/L) of the sample solution. Calculate how many mg of acetylsalicylic acid were in the 0.0443 g of aspirin.