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Assignments:
 The molar extinction coefficient of a solution of concentration 0.04 M and thickness 10.5 cm is 80.08 L mol^{1} m^{1}. Find the value of optical density.
 Absorbance of a solution is found to be 0.83 .Calculate % Transmittance.
 When a wavelength of 250 nm is passed through a solution, the light intensity is reduced to 20% of its initial value. Then absorbance is given by _____
 The absorbance of 1 mm of a sample solution whose concentration is 0.03 M is _____. (Given that the molar absorption coefficient is 10 L mol^{1} m^{1)}
 An unknown solution showed absorbance 5.000 and molar absorption coefficient, ε= 160 L mol^{1} m^{1}, (Thickness, l=2 cm). Calculate the concentration of the solution.
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