Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 2 - Sections 2.1-2.9 - Exercises - Problems by Topic - Page 81: 71

Answer

The mass spectrum of Gallium is represented in the following graph: ---------------

Work Step by Step

In a mass spectrum, the abundance of the most occurring isotope is set to 100%. Find the constant that we should multiply the abundances so the highest one is equal to 100% $$60.108 \times x = 100$$ $$x = \frac{100}{60.108} = 1.66367206$$ - Multiply the other abundance by this number. $$39.892 \times 1.66367206 \approx 66.4 \%$$ Therefore, the intensity of Gallium-69 is equal to 100%, and the same for Gallium-71 is about 66.4% Sketch a graph with these values (see image).
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