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Chemistry, 02.10.2020 23:01, heastonk9136
Suppose that a new element (E) were discovered that existed as 3 naturally occurring isotopes. 25.0% of the atoms had a mass of 278amu, 38.0% had a mass of 281 amu, and the remainder had a mass of 285amu. What would its atomic mass be?
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Suppose that a new element (E) were discovered that existed as 3 naturally occurring isotopes. 25.0%...
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