A periodic table might list the average atomic mass of magnesium as being 24.312 u, which is the result of weighting the atomic masses of the magnesium isotopes according to their natural abundances on Earth.The three isotopes and their masses are 24Mg (23.985 04 u), 25Mg (24.985 84 u), and 26Mg (25.982 59 u). The natural abundance of 24Mg is 78.99% by mass (that is, 78.99% of the mass of a naturally occurring sample of magnesium is due to the presence of 24Mg).What is the abundance of (a) 25Mg and (b) 26Mg?

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A periodic table might list the average atomic mass of magnesium
as being 24.312 u, which is the result of weighting the
atomic masses of the magnesium isotopes according to their natural
abundances on Earth.The three isotopes and their masses are
²⁴Mg (23.985 04 u), ²⁵Mg (24.985 84 u), and ²⁶Mg (25.982 59 u).

The natural abundance of ²⁴Mg is 78.99% by mass (that is, 78.99%
of the mass of a naturally occurring sample of magnesium is due
to the presence of 24Mg).What is the abundance of (a) ²⁵Mg and
(b) 26Mg?

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