Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 2 - Atoms, Molecules, and Ions - Exercises - Page 73: 2.2b

Answer

293.95 amu

Work Step by Step

Atomic mass is calculated by finding the weighted average of the masses of each of the isotopes of the atom. 60% of the atoms are $^{293}$Nv, which have a mass of 293.15 amu, and 40% are $^{295}$Nv which have a mass of 295.15 amu, so (0.60$\times$293.15)+(0.40$\times$295.15) gives 293.95 amu.
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