You prepared a stock solution by dissolving a compound with the molar mass of 110.65 in a 100 mL volumetric flask. Then you removed a 2 mL aliquot and placed it in a 250 mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution in the 250 mL volumetric flask at 288 nvm was 0.421 using a 2.50 cm path length curvet. The molar absorptivity for this compound at 288 nvm is 65000 M-1cm-1 How many ng of the compound were used to make the stock solution? a)1.44 b)0.96 c)0.72 d)1.22 e)2.87

You prepared a stock solution by dissolving a compound with the molar mass of 110.65 in a 100 mL volumetric flask. Then you removed a 2 mL aliquot and placed it in a 250 mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution in the 250 mL volumetric flask at 288 nvm was 0.421 using a 2.50 cm path length curvet. The molar absorptivity for this compound at 288 nvm is 65000 M-1cm-1 How many ng of the compound were used to make the stock solution? a)1.44 b)0.96 c)0.72 d)1.22 e)2.87

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter27: Molecular Fluorescence Spectroscopy

Section: Chapter Questions

Problem 27.11QAP

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