Absorption and Transmittance. See attached file for full problem description.
35. A 20-ppm solution of a DNA molecule (unknown moecular weight) isolated from Escherichia coli was found to give an absorbance of 0.80 in a 2-cm cell. Calculate the absorptivity of the molecule.
37. Titanium is reacted with hydrogen peroxide in 1 M sulfuric acid to form a colored complex. If a 2.00 *10^-5 M solution absorbs 31.5% of the radiation at 415 nm, what would be (a) the absorbane and (b) the transmittance and percent absorption for a 6.00 * 10^-5 solution?© BrainMass Inc. brainmass.com December 15, 2022, 5:47 pm ad1c9bdddf
Please see the attached file.
1. According to Beer- Lambert law, the absorbance A is
L is the path length, c is the concentration of the chemical.
So the absorptivity
In this problem, we have A=0.8, the path length l = 2 cm.
The concentration of the ...
It shows how calculate the the absorbane and transmittance of molecules in detail.