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12:10 ll spectroscopy homework hand... JPEG - 549 KB Chem 112 Homework Problems Concerning Spectroscopy 1. The wavelength of some particular electromagnetic radiation in a vacuum is 275 nm. energy that is associated with each photon of this radiation. Determine the frequency of the radiation and compute the 2. A beam of electromagnetic radiation consists exclusively of photons of wavelength 480 nm. this beam will strike a surface is 0.005 moles/sec. It is known that the rate at which the photons in a. Compute the energy associated with one of these photons. b. Compute the power of this beam. c. If this beam is focused on an area of 0.01 cm², compute the intensity of this beam. 3. A beam of electromagnetic radiation consists exclusively of photons of frequency 4.916 x 10 14 sec-. found to be 1357 J/sec. to a surface by this beam. The power of this beam is measured and Compute the rate at which photons are delivered Express your answer in moles/sec. Cherm l!2 Homework: Beer's haw 5-7 The molar absorptivity of a compound in aquenus solution at 765 nm is 1.54 x 10'. The percent transmittance of a solution of the compound in a cell with a 1.00-cm pathlength is 43.2. What is the concentration of the soiution? 5-8 A standard 2.50 x 10- M solution of a compound was prepared and piaced in a ce!l with a 5.00-cm pathiength. The percent transmittance of the solution at 347 nm is 58.6. Determine the molar absorptivity. 5-9 Convert the following absorbances to percent transmittance: (a) 0.113 (c) 0.430 (h) 0.878 (d) 0.217 (e) 1.023 5-10 Convert the foilowing percent transmittances to absorbances: (a) 12.3 (c) 44.8 (h) 87.8 (d) 62.1 (e) 37.6

12:10 ll spectroscopy homework hand... JPEG - 549 KB Chem 112 Homework Problems Concerning Spectroscopy 1. The wavelength of some particular electromagnetic radiation in a vacuum is 275 nm. energy that is associated with each photon of this radiation. Determine the frequency of the radiation and compute the 2. A beam of electromagnetic radiation consists exclusively of photons of wavelength 480 nm. this beam will strike a surface is 0.005 moles/sec. It is known that the rate at which the photons in a. Compute the energy associated with one of these photons. b. Compute the power of this beam. c. If this beam is focused on an area of 0.01 cm², compute the intensity of this beam. 3. A beam of electromagnetic radiation consists exclusively of photons of frequency 4.916 x 10 14 sec-. found to be 1357 J/sec. to a surface by this beam. The power of this beam is measured and Compute the rate at which photons are delivered Express your answer in moles/sec. Cherm l!2 Homework: Beer's haw 5-7 The molar absorptivity of a compound in aquenus solution at 765 nm is 1.54 x 10'. The percent transmittance of a solution of the compound in a cell with a 1.00-cm pathlength is 43.2. What is the concentration of the soiution? 5-8 A standard 2.50 x 10- M solution of a compound was prepared and piaced in a ce!l with a 5.00-cm pathiength. The percent transmittance of the solution at 347 nm is 58.6. Determine the molar absorptivity. 5-9 Convert the following absorbances to percent transmittance: (a) 0.113 (c) 0.430 (h) 0.878 (d) 0.217 (e) 1.023 5-10 Convert the foilowing percent transmittances to absorbances: (a) 12.3 (c) 44.8 (h) 87.8 (d) 62.1 (e) 37.6

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter4: Introduction To Quantum Mechanics
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12:10 ll spectroscopy homework hand... JPEG - 549 KB Chem 112 Homework Problems Concerning Spectroscopy 1. The wavelength of some particular electromagnetic radiation in a vacuum is 275 nm. energy that is associated with each photon of this radiation. Determine the frequency of the radiation and compute the 2. A beam of electromagnetic radiation consists exclusively of photons of wavelength 480 nm. this beam will strike a surface is 0.005 moles/sec. It is known that the rate at which the photons in a. Compute the energy associated with one of these photons. b. Compute the power of this beam. c. If this beam is focused on an area of 0.01 cm², compute the intensity of this beam. 3. A beam of electromagnetic radiation consists exclusively of photons of frequency 4.916 x 10 14 sec-. found to be 1357 J/sec. to a surface by this beam. The power of this beam is measured and Compute the rate at which photons are delivered Express your answer in moles/sec. Cherm l!2 Homework: Beer's haw 5-7 The molar absorptivity of a compound in aquenus solution at 765 nm is 1.54 x 10'. The percent transmittance of a solution of the compound in a cell with a 1.00-cm pathlength is 43.2. What is the concentration of the soiution? 5-8 A standard 2.50 x 10- M solution of a compound was prepared and piaced in a ce!l with a 5.00-cm pathiength. The percent transmittance of the solution at 347 nm is 58.6. Determine the molar absorptivity. 5-9 Convert the following absorbances to percent transmittance: (a) 0.113 (c) 0.430 (h) 0.878 (d) 0.217 (e) 1.023 5-10 Convert the foilowing percent transmittances to absorbances: (a) 12.3 (c) 44.8 (h) 87.8 (d) 62.1 (e) 37.6
Transcribed Image Text:12:10 ll spectroscopy homework hand... JPEG - 549 KB Chem 112 Homework Problems Concerning Spectroscopy 1. The wavelength of some particular electromagnetic radiation in a vacuum is 275 nm. energy that is associated with each photon of this radiation. Determine the frequency of the radiation and compute the 2. A beam of electromagnetic radiation consists exclusively of photons of wavelength 480 nm. this beam will strike a surface is 0.005 moles/sec. It is known that the rate at which the photons in a. Compute the energy associated with one of these photons. b. Compute the power of this beam. c. If this beam is focused on an area of 0.01 cm², compute the intensity of this beam. 3. A beam of electromagnetic radiation consists exclusively of photons of frequency 4.916 x 10 14 sec-. found to be 1357 J/sec. to a surface by this beam. The power of this beam is measured and Compute the rate at which photons are delivered Express your answer in moles/sec. Cherm l!2 Homework: Beer's haw 5-7 The molar absorptivity of a compound in aquenus solution at 765 nm is 1.54 x 10'. The percent transmittance of a solution of the compound in a cell with a 1.00-cm pathlength is 43.2. What is the concentration of the soiution? 5-8 A standard 2.50 x 10- M solution of a compound was prepared and piaced in a ce!l with a 5.00-cm pathiength. The percent transmittance of the solution at 347 nm is 58.6. Determine the molar absorptivity. 5-9 Convert the following absorbances to percent transmittance: (a) 0.113 (c) 0.430 (h) 0.878 (d) 0.217 (e) 1.023 5-10 Convert the foilowing percent transmittances to absorbances: (a) 12.3 (c) 44.8 (h) 87.8 (d) 62.1 (e) 37.6
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