Spectrophotometry 6. Potassium dichromate forms an in wavelength at 450 nm. If a 2.63 x 10 M register standard 1.00 em pathlength cuvette, determine the absorbance of the solution. tensely orange-colored solution with an absorbance maximum solution registers a percent transmittance value of 45.6% in a 7. Determine the molar absorptivity of potassium dichromate using Beer's Law and the result in 6). Use proper units. Absorbances for several additional concentrations were also determined and compiled in the Beer's Law graph attached. Using the slope of the graph, determine the molar absorptivity for potassium dichromate within the graphed data. 8. 9. Explain why the result changed noticeably compared to the value determined in 7) above. Hint: the calibration point from 7) above is included in the graph. 10, A potassium dichromate solution of unknown concentration has a percent transmittance of 38.6%. Use the graph to estimate its concentration.