There are three isotopes of an element, X-28, X-29, and X-30, with relative abundances of 92.2297%, 4.6832%, 3.0872%, respectively. What is the average atomic mass in amu of this element using four significant figures?
There are three isotopes of an element, X-28, X-29, and X-30, with relative abundances of 92.2297%, 4.6832%, 3.0872%, respectively. What is the average atomic mass in amu of this element using four significant figures?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter2: Atoms Molecules And Ions
Section2.2: Isotopes And Atomic Weight
Problem 2.3CYU: Neon has three stable isotopes, one with a small abundance. What are the abundances of the other two...
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Step 1
Given
molar mass of X1 = 28 with abundance 92.2297%
molar mass of X2 = 29 with abundance 4.6832%
molar mass of X3 = 30 with abundance 3.0872%
average atomic mass of element is the sum of the masses of its isotopes with each multiplied with its natural abundance.
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