The amount of UVA radiation hitting a surface at sea level in a lightly clouded day is about 70W/m2 . About half of that can be absorbed by the skin. A typical carboncarbon bond requires 348 kJ/mol to break. A person lies on the beach for about 1 hour without sunscreen (i.e. fully exposed to UVA radiation). Estimate the number of C-C bonds broken in this person's back (about 0.18m^2) over that period. Assume that the average wavelength of UVA is 335 nm.
The amount of UVA radiation hitting a surface at sea level in a lightly clouded day is about 70W/m2 . About half of that can be absorbed by the skin. A typical carboncarbon bond requires 348 kJ/mol to break. A person lies on the beach for about 1 hour without sunscreen (i.e. fully exposed to UVA radiation). Estimate the number of C-C bonds broken in this person's back (about 0.18m^2) over that period. Assume that the average wavelength of UVA is 335 nm.
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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The amount of UVA radiation hitting a surface at sea level in a lightly clouded day is about 70W/m2 . About half of that can be absorbed by the skin. A typical carboncarbon bond requires 348 kJ/mol to break. A person lies on the beach for about 1 hour without sunscreen (i.e. fully exposed to UVA radiation). Estimate the number of C-C bonds broken in this person's back (about 0.18m^2) over that period. Assume that the average wavelength of UVA is 335 nm.
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