A hypothetical element, M, has four stable isotopes with the masses shown below.109M = 108.9842 amu107M = 106.9085 amu105M = 104.9904 amu103M = 102.9991 amuIf the percentage abundance of 109M is 10.5%, 105M is 6.6% and the average atomic mass of M is 106.6785 amu, then what is the percentage abundance for 103M? Enter your answer as a percentage but without the % symbol. Use one decimal place.

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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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A hypothetical element, M, has four stable isotopes with the masses shown below.

¹⁰⁹M = 108.9842 amu

¹⁰⁷M = 106.9085 amu

¹⁰⁵M = 104.9904 amu

¹⁰³M = 102.9991 amu

If the percentage abundance of ¹⁰⁹M is 10.5%, ¹⁰⁵M is 6.6% and the average atomic mass of M is 106.6785 amu, then what is the percentage abundance for ¹⁰³M? Enter your answer as a percentage but without the % symbol. Use one decimal place.

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