What is the Average atomic mass of an unknown element given its isotopes and their abundancies below: Natural abundances 235X= 23% 236X= 2% 238X= 54% 239X= 21%

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter3: Stoichiometry
Section: Chapter Questions
Problem 2RQ: Atomic masses are relative masses. What does this mean?
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What is the Average atomic mass of an unknown element given its isotopes and their abundancies below:

Natural abundances

235X= 23%

236X= 2%

238X= 54%

239X= 21%

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