Exposure to a sufficient quantity of ultraviolet will redden the skin, producing erythema −−a sunburn. The amount of exposure necessary to produce this reddening depends on the wavelength. For a 1.0 cm2cm2 patch of skin, 3.7 mJmJ of ultraviolet light at a wavelength of 254 nmnm will produce reddening; at 300 nmnm wavelength, 13 mJmJ are required. How many total photons with the wavelength of 254 nmnm produce this reddening of the 1.0 cm2cm2 of the skin? How many total photons with the wavelength of 300 nmnm produce this reddening of the 1.0 cm2cm2 of the skin?
Exposure to a sufficient quantity of ultraviolet will redden the skin, producing erythema −−a sunburn. The amount of exposure necessary to produce this reddening depends on the wavelength. For a 1.0 cm2cm2 patch of skin, 3.7 mJmJ of ultraviolet light at a wavelength of 254 nmnm will produce reddening; at 300 nmnm wavelength, 13 mJmJ are required. How many total photons with the wavelength of 254 nmnm produce this reddening of the 1.0 cm2cm2 of the skin? How many total photons with the wavelength of 300 nmnm produce this reddening of the 1.0 cm2cm2 of the skin?
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter7: Electronic Structure
Section: Chapter Questions
Problem 7.100QE
Related questions
Question
Exposure to a sufficient quantity of ultraviolet will redden the skin, producing erythema −−a sunburn. The amount of exposure necessary to produce this reddening depends on the wavelength. For a 1.0 cm2cm2 patch of skin, 3.7 mJmJ of ultraviolet light at a wavelength of 254 nmnm will produce reddening; at 300 nmnm wavelength, 13 mJmJ are required.
How many total photons with the wavelength of 254 nmnm produce this reddening of the 1.0 cm2cm2 of the skin?
How many total photons with the wavelength of 300 nmnm produce this reddening of the 1.0 cm2cm2 of the skin?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
