Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 7 - Problems: 7.33

Answer

4.559 x 10^-19 J

Work Step by Step

Analysis : The solution involves the following two steps : Step 1 : Convert the given wavelength into meters. Step 2 : Use the relation between Energy and Wavelength to get the value of Energy. The relation is as follows : E = hc / λ Where, E : Energy c : Speed of Light = 3 x 10^8 m/s h : Planck's Constant = 6.626 x 10^-34 J.s λ : Wavelength 2 STEP 1 : Wavelength into meters Wavelength = 436 nm 1 nm = 10^-9 m So, Wavelength in meters = 436 x 10^-9 m = 4.36 x 10^-11 m 3 STEP 2 : Energy Calculation E = h.c / λ E = (6.626 x 10^-34) (3 x 10^8) / 4.36 x 10^-7 = 4.559 x 10^-19 J
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