Red-hot metal is placed in the water and allowed to sit for a long period of time. Which statement best describes what happens to the
temperature of the water and the metal? *

a) the water and the metal will be the same temperature, which is somewhere between the initial temperatures of the metal and water.

b) the water and the metal will be the same temperature, which is warmer then the initial temperature of the metal.

c) the water and metal will be the same temperature, which is cooler then the initial temperature of the water.

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.