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1. 1. An element X have throe isotopes X", X and X The percentage abundance of X is 90% and its average atomic mass of elements is 20.18. The peroentage abundance of X" should be

1. 1. An element X have throe isotopes X", X and X The percentage abundance of X is 90% and its average atomic mass of elements is 20.18. The peroentage abundance of X" should be

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. An element X have throe isotopes X",x" and X The percentage abundance of X" is 90% and its average atomic mass of elements is 20.18. The peroentage abundance of X" should be 2. The average atormnic mass of a mixture containing 79 mole percent of Mg and remaining 21 mole percent of Mg and Mg, is 24 31. Find the mole percent afMg. 3. . Chlorine exists in two isotopic forms, Cl-37 and Cl-35 but its atomic mass is 35.5. This indicates the ratio of Cl-37 and Cl-35 is appraximately:
Transcribed Image Text:1. An element X have throe isotopes X",x" and X The percentage abundance of X" is 90% and its average atomic mass of elements is 20.18. The peroentage abundance of X" should be 2. The average atormnic mass of a mixture containing 79 mole percent of Mg and remaining 21 mole percent of Mg and Mg, is 24 31. Find the mole percent afMg. 3. . Chlorine exists in two isotopic forms, Cl-37 and Cl-35 but its atomic mass is 35.5. This indicates the ratio of Cl-37 and Cl-35 is appraximately:
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