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Chemistry, 06.03.2021 19:30 lallenma

Consider an element Z that has two naturally occurring isotopes with the following percent abundances: the isotope with a mass number of 19.0 is 55.0% abundant; the isotope with a mass number of 21.0 is 45.0% abundant. What is the average atomic mass for element Z? Average atomic mass of Z = [mass]

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