A. Discuss the differences observed in the FT-IR and NMR spectra of nitrobenzene and aniline that are consistent with the formation of the latter in this procedure. b. Discuss the differences observed in the FT-IR and NMR spectra of aniline and acetanilide that are consistent with the formation of the latter in this procedure.
c. Discuss the differences observed in the FT-IR and NMR spectra of acetanilide and 4- acetamidobenzenesulfonyl chloride that are consistent with the formation of the latter in this procedure.

Perform the following mathematical operations and report the answer to the appropriate number of significant figures 5.87998 + 3.100

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

A3.37-mg sample of protein was chemically digested to convert its nitrogen into ammonia and then diluted to 100.0 ml. then 10.0 ml of this solution was placed in a 50-ml volumetric flask and treated with 5 ml of phenol solution plus 2 ml of sodium hypochlorite solution. the sample was diluted to 50.0 ml, and the absorbance at 625 nm was measured in a 1.00-cm cuvette and found to be 0.486. for reference, a standard solution was prepared from 10.0 mg of nh4cl (molar mass = 53.49 grams/mole) dissolved in 1.00 l of water. then 10.0 ml of this standard was placed in a 50-ml volumetric flask, treated in the same manner as the unknown, and the absorbance found to be 0.323. finally, a reagent blank was prepared using distilled water in place of unknown, it was treated in the same manner as the unknown, and the absorbance found to be 0.076. calculate the weight percent of nitrogen in the protein.