X, an unknown element, has two isotopes. The first isotope has a mass of 68.93 amu and the other isotope has a mass of 7

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answerhappygod
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X, an unknown element, has two isotopes. The first isotope has a mass of 68.93 amu and the other isotope has a mass of 7

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X, an unknown element, has two isotopes. The first isotope has amass of 68.93 amu and the other isotope has a mass of 70.936 amu.If the average mass of an X atom is 69.054 amu, what is the percentabundance of the first isotope?
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