Enter your answer in the provided box. The UV light that is responsible for tanning the skin falls in the 320- to 400-nm region. Calculate the total energy (in joules) absorbed by a person exposed to this radiation for 3.0 h, given that there are 2.0 x 106 photons hitting Earth's surface per square centimeter per second over a 80-nm (320 to 400 nm) range and that the exposed body area is 0.45 m?. Assume that only half of the radiation is absorbed and the other half is reflected by the body. (Use an average wavelength of 360 nm in calculating the energy of a photon.)
Enter your answer in the provided box. The UV light that is responsible for tanning the skin falls in the 320- to 400-nm region. Calculate the total energy (in joules) absorbed by a person exposed to this radiation for 3.0 h, given that there are 2.0 x 106 photons hitting Earth's surface per square centimeter per second over a 80-nm (320 to 400 nm) range and that the exposed body area is 0.45 m?. Assume that only half of the radiation is absorbed and the other half is reflected by the body. (Use an average wavelength of 360 nm in calculating the energy of a photon.)
Chemistry
10th Edition
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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Transcribed Image Text:Enter your answer in the provided box.
The UV light that is responsible for tanning the skin falls in the 320- to 400-nm region.
Calculate the total energy (in joules) absorbed by a person exposed to this radiation for 3.0 h, given that
there are 2.0 x 10 photons hitting Earth's surface per square centimeter per second over a 80-nm
(320 to 400 nm) range and that the exposed body area is 0.45 m2.
Assume that only half of the radiation is absorbed and the other half is reflected by the body.
(Use an average wavelength of 360 nm in calculating the energy of a photon.)
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