Question

At 580nm, the wavelength of its maximum absorption, a 3.75 x10^-5 M solution of the complex FeSCN2+ has an absorbance of 0.2734in a 1.00cm cell.
a) What is the molar absorptivity of the FeSCN2+ complex at580nm?
b) What is the percent transmittance of the solution described ina)?
c) A 5.00mL aliquot of a solution that contains 5.94ppm iron(III)is treated with an excess of KSCN and is diluted to 50.0mL. What isthe absorbance of the resulting solution at 580nm in a 2.50cm pathlength cell