A measurment for the  Lambda-max for a colored solution is 671 nm with a very high Absorptivity.   What does the color of the solution look like in the sunshine? and  What does the color look like in a room where the only light source emits 671 nm

permanganate solution using the color wheel. ART II: INVESTIGATING ABSORBANCE AND PATHLENGTH 12. Based on Beer's law (A = ɛlC, A = absorbance, ɛ = molar absorptivity, I pathlength and C = concentration), what do you predict is the relationship between pathlength and absorbance? What about pathlength and transmittance?

A solution of a substance with a molar absorptivity of 167 M-1cm²¹ gives a transmittance of 4.26% in a cell with a 1.00 cm path length. What is the concentration of this solution in molarity? 0.0821 0.00387 0.000255 0.00821

A student mixed 5.00mL of 0.0020M Fe(NO3)3, 3.00mL of 0.0020M KSCN, and 3.00mL of distilled water. The mixture reacted to form a reddish solution indicating that FeSCN2+ was formed, according to the equation below. An absorbance of 0.21 was measured for this solution in a Spectrophotometer set at a wavelength of 447nm. Fe³+ (aq) + SCN (aq) FeSCN2+ (aq) A calibration curve was used to find the equilibrium concentration of the product of this reaction: y = 1895x + 0.027 Calculate the equilibrium concentration of the Fe³+ Report your answer to 4 sig figs

Given the Beer’s Law, A = εbc, determine the concentration of a sample that gave  an absorbance of 0.65 and solute’s molar absorptivity is 1.5 x 10-4/M-cm using a 1-cm sample container

A calibration curve is made for the absorbance as a function of concentration of blue dye (in mg/L).  The slope of the curve is 0.131; the y-intercept is -0.01869; the correlation is 0.993.  If a consumer sample has an absorbance of 0.120 on the same instrument, what is its concentration of blue dye, in mg/L? a. 0.034 b. 0.935 c. 0.993 d. 1.06

An unknown amount of a compound with a molecular mass of 270.57 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 355 nm is 0.495 in a 1.000 cm cuvette. The molar absorptivity for this compound at 355 nm is €355 = 6149 M-¹cm-¹. What is the concentration of the compound in the cuvette? concentration: What is the concentration of the compound in the 10 ml flask? concentration: How many milligrams of compound were used to make the 10 mL solution? mass: M M mg

What is the absorbance of a solution if it had 79.5% transmittance?

Prepare a 1:200 dilution of the 20 mM Coomassie solution to measure the max wavelength—you need 2 ml for the absorbance measurement but the dilution does not matter as long as the absorbance is in the range of 0.2 to 0.6. Set the initial wavelength at 450 nm. Blank the spec with a tube containing 2 ml water. Use the 1000 ul pipette for water because you need to deliver the same amount of water in each tube for the next exercise.   Why is it when the calculations are done for the given values above, the value for ml is 0.01 for coomassie blue?

22. Can you explain Beer's Law and how to solve problems which involve it?