What is the path length in centimeters when the transmittance is #0.692#, the molar absorptivity is #7.39 xx 10^4 "L/(mol.cm)"# and the concentration is #0.0000923 M#? Chemistry Solutions Measuring Concentration 1 Answer Paul G. · Stefan V. Mar 27, 2017 #"0.101 cm"# Explanation: Beer's Law: #"Absorbance" = ("molar absorptivity") xx ("path length") xx ("concentration")# or #A = e xx Lxx c# So #L = A/ (e c) # #L = 0.692 / ((7.39*10^4L/(mol*cm) * (9.23*10^-5 (mol)/L))# #L = "0.101 cm"# Answer link Related questions How do you measure concentration from absorbance? How do you measure concentration of a solution? How do you measure concentration of CO2? What concentration measure changes with temperature? How can I measure the concentration of salt in water? How is the concentration of a solution measured? How does the concentration of electrolyte affect an electrochemical cell? How does normality differ from molarity? What is the molality of a solution of 10 g NaOH in 500 g water? What are the mole fractions of the components of the solution formed when 92 g glycerol is mixed... See all questions in Measuring Concentration Impact of this question 3440 views around the world You can reuse this answer Creative Commons License