Homework answers / question archive /  A 20-ppm solution of a DNA molecule (unknown moecular weight) isolated from Escherichia coli was found to give an absorbance of 0

 A 20-ppm solution of a DNA molecule (unknown moecular weight) isolated from Escherichia coli was found to give an absorbance of 0

Chemistry

Share With

 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?