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ID: 518657 • Letter: W

Question

www.saplin glearning.com/ibisoms/mod/ibis/view.php?id 3224084 Nettlx f Facebook Secure coud Access D Tower af God scanl N Pastsecret Acompleto guide to N Malta o dag breeder Kids Rides & Rdes to Account summary by Sapling Learning Sapling Learning I Indlana State University-Chem 32 I Act huities and Due Dates I HV12 My Assignment Resources Attempts score s/5/2017 09:00AM A 26/100 4/25/2017 0702 PM Gradebook O ent Information Assig Print Calculator Paradi Tabk Available From 00 AM Question 11 of 15 5/5/2017 09:00 AM Points possible: 100 Map GA Sapling Learning Grade Category: Default Description A specific steroid has Amax a 275 nm and molar absorptivity e 500 L mol cm 1. What is the Policies: concentration of the compound in a solution whose absorbance at 275 nm is A 0.055 with a sample path length of 1.00 cm? Number M any g eep trying to you get it right or give up. You lose 10% of the points available to eTextbook O Help with This Top o Web Help & Videos OTechnical Support and Bug Reports A Previous 8 Gi Up & View Solution 2 Check An Next JExit Hint 2017 Sapling Learning, about us careers privacy polcy tems of use contact us help O Logout Help

Explanation / Answer

A(absorbance)= e( molar extinction coefficient /M.cm)*b(path length in cm )*C( concentration M)

Given A= 0.055, e= 11500 /M.cm, b=1 cm

0.055=11500*1*concentration

Concentration = 0.055/11500 =4.78*10-6M