Examine the given Beer's law standard curve for an unknown dye measured in a 1.0 cm cuvette.What is the concentration (in M) of a sample of the unknown dye with an absorbance of 0.23 at 542 nm?

Suppose you measure the absorbance of a yellow dye solution in a 1.00 cm cuvette (b=1.00 cm).The absorbance of the solution at 427 nm is 0.44 . If the molar absorptivity of yellow dye at 427 nm is 27400 M–1cm–1, what is the concentration of the solution in M?

A solution of CsI is diluted from its original volume of 8000 mL by adding 990 mL of solvent. If its new concentration is 0.2 M, what was the original concentration of this solution?

A solution was prepared by dissolving 118.9 mg of K2Cr2O7 in 1.000 L of water. A 10.00 mL aliquot was transferred to a 100.0 mL volumetric flask and diluted to the mark. The dilute solution had an absorbance of 0.206 at 400 nm, in a 1.00 cm cell. a. What is the concentration of the dilute solution in ppm? b. Using Beer’s Law equation, calculate the molar absorptivity of K2Cr2O7

Calculate the adsorption of a dye on activated carbon at 25 degree C, where k = 0.025, n = 0.5 and C = 0.04.Question 2AnswerA.0.04B.0.03C.0.05D.0.06

A sample of ethyl alcohol absorbs 6.0 3 104J ofthermal energy as it boils and completely evaporates.What is the volume of the ethyl alcohol?