The percent chloride in an unknown sample may be determined by gravimetric methods. suppose a 0.6789g sample of an unknown chloride sample was dissolved and agcl is precipitated by adding agno3 solution. the precipitate was filtered, ignited, and found to weigh 0.g. what was the percent chloride in the sample?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

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.

Which statement best describes the function of enzymes?