Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 19, Problem 19.30P
Interpretation Introduction

Interpretation:

Identify the difference in meaning between sunblock and sunscreen.

Concept introduction:

Ultraviolet radiation penetrating earth’s ozone layer is randomly divided by wavelength into two regions UV-B and UV-A. Sunscreen agents are more effective in screening UV-B radiation but they don’t screen UV-A radiation.

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