1.A compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an extinction coefficient (ε) of 23,150 at λmax=235 nm. What is the energy absorbed by the compound at the maximum of the peak? Note that hc=1.98644586×10−25J*m. Report your answer in KJ/mole to the correct number of significant figures. Do not include the units in your answer 2.In general, we want to have absortions less than or equal to 1. What percentage of the incident light is transmitted when absorption is 1? Report your answer to the nearest whole number. 3.An ethanol solution of 3.5 mg/100 ml of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an absorbance (A) of 0.972 at λmax=235 nm. What is its molar extinction coefficient? Report your answer to the correct number of significant figures.
1.A compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an extinction coefficient (ε) of 23,150 at λmax=235 nm. What is the energy absorbed by the compound at the maximum of the peak? Note that hc=1.98644586×10−25J*m. Report your answer in KJ/mole to the correct number of significant figures. Do not include the units in your answer 2.In general, we want to have absortions less than or equal to 1. What percentage of the incident light is transmitted when absorption is 1? Report your answer to the nearest whole number. 3.An ethanol solution of 3.5 mg/100 ml of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an absorbance (A) of 0.972 at λmax=235 nm. What is its molar extinction coefficient? Report your answer to the correct number of significant figures.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1.A compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an extinction coefficient (ε) of 23,150 at λmax=235 nm. What is the energy absorbed by the compound at the maximum of the peak? Note that hc=1.98644586×10−25J*m. Report your answer in KJ/mole to the correct number of significant figures. Do not include the units in your answer
2.In general, we want to have absortions less than or equal to 1. What percentage of the incident light is transmitted when absorption is 1? Report your answer to the nearest whole number.
3.An ethanol solution of 3.5 mg/100 ml of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an absorbance (A) of 0.972 at λmax=235 nm. What is its molar extinction coefficient? Report your answer to the correct number of significant figures.
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