Sunscreen contains compounds that absorb ultraviolet light. When sunscreen is applied to skin, it prevents ultraviolet light from reach- ing the skin. The graph that follows shows the absorbance of light as a function of wavelength for two different compounds (2-EHMC and TDSA) common in sunscreen. Absorbance is a measure of the amount of light absorbed by the compound-the higher the absor- bance, the more light is absorbed. Study the graph and answer the questions. 0.6 UV-E UV-A 0.5 0.4 2-EHMC 0.3 TDSA 0.2 0.1 290 300 310 320 330 340 350 360 370 380 390 400 Wavelength (nm) op. Why do you think sunscreens commonly contain both of these compounds and not just one of them? Absorba nce

Sunscreen contains compounds that absorb ultraviolet light. When sunscreen is applied to skin, it prevents ultraviolet light from reach- ing the skin. The graph that follows shows the absorbance of light as a function of wavelength for two different compounds (2-EHMC and TDSA) common in sunscreen. Absorbance is a measure of the amount of light absorbed by the compound-the higher the absor- bance, the more light is absorbed. Study the graph and answer the questions. 0.6 UV-E UV-A 0.5 0.4 2-EHMC 0.3 TDSA 0.2 0.1 290 300 310 320 330 340 350 360 370 380 390 400 Wavelength (nm) op. Why do you think sunscreens commonly contain both of these compounds and not just one of them? Absorba nce

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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Sunscreen contains compounds that absorb ultraviolet light. When sunscreen is applied to skin, it prevents ultraviolet light from reach- ing the skin. The graph that follows shows the absorbance of light as a function of wavelength for two different compounds (2-EHMC and TDSA) common in sunscreen. Absorbance is a measure of the amount of light absorbed by the compound-the higher the absor- bance, the more light is absorbed. Study the graph and answer the questions. 0.6 UV-E UV-A 0.5 0.4 2-EHMC 0.3 TDSA 0.2 0.1 290 300 310 320 330 340 350 360 370 380 390 400 Wavelength (nm) Which compound absorbs more energy at its maximum absorption? Absorba nce