131.Solving a chemistry problem

19. Determine the absorption coefficient ε λ if, during the passage of light with a wavelength λ = 610 μm, the following data were obtained through a layer of sol mastic of thickness l at a concentration of C:
 
C,% 1.0 0.6 0.20 0.10 0.06 0.02 0.01
l, mm 2.5 2.5 2.5 5.0 20.0 20.0 30.0
The intensity of the transmitted light J,%
14.4 27.0 63.9 65.8 67.1 70.1 77.8
 
Construct a graph D = f (C).