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(b) 1.2
2. Calculate the concentration of an unknown using the following data (1 pt.)
standard concentration = 10 ppm
drops of standard in color match = 6
drops of unknown in color match = 8
3. The absorbance of a 7.5 x 10-4 M solution of a compound is 0.68 at wavelength 595 nm in a 1 cm cell, calculate the extinction coefficient. (2 pts.)