Acalibration curve was created to determine the quantity of protein in a solution. the calibration curve has the form of a straight line with the equation =0.0182x+0.007 where is the corrected absorbance of the solution and x is quantity of protein in the solution in units of micrograms (μg). determine the quantity of protein in a solution that has an absorbance of 0.276 . a blank solution has an absorbance of 0.061 .

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.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device