A solution containing 9.64 ppm of NaMnO4 (MM = 141.925 g/mol) has a %T-29.97 in a 2.6 cm cuvette at 520 nm.Calculate the molar absorptivity of NaMnO4 and give your answer to the nearest whole number.Question 7A certain mass of a compound with a formula mass of 156.02 g/mol was dissolved in a 50.00 mL volumetric flask.A 1.00 mL aliquot was withdrawn and placed in a 10.00 mL volumetric flask. The absorbance was measured in a 0.500 cmcuvette and found to be 0.605. The molar absorptivity for this compound is 2.577 M-¹cm-¹.How many mg of compound were used to make the 50.00 mL solution? Give your answer to 2 decimal places.

Since you have asked multiple question, as per our company guidelines we are supposed to answer…

A solution containing 9.64 ppm of NaMnO4 (MM 141.925 g/mol) has a %T - 29.97 in a 2.6 cm cuvette at 520 nm. Calculate the molar absorptivity of NaMnO4 and give your answer to the nearest whole number.

A solution containing 9.64 ppm of NaMnO4 (MM 141.925 g/mol) has a %T - 29.97 in a 2.6 cm cuvette at 520 nm. Calculate the molar absorptivity of NaMnO4 and give your answer to the nearest whole number.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.19QAP

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Question

A solution containing 9.64 ppm of NaMnO4 (MM = 141.925 g/mol) has a %T-29.97 in a 2.6 cm cuvette at 520 nm.
Calculate the molar absorptivity of NaMnO4 and give your answer to the nearest whole number.
Question 7
A certain mass of a compound with a formula mass of 156.02 g/mol was dissolved in a 50.00 mL volumetric flask.
A 1.00 mL aliquot was withdrawn and placed in a 10.00 mL volumetric flask. The absorbance was measured in a 0.500 cm
cuvette and found to be 0.605. The molar absorptivity for this compound is 2.577 M-¹cm-¹.
How many mg of compound were used to make the 50.00 mL solution? Give your answer to 2 decimal places.

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