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Chemistry, 05.05.2020 13:10 jb141553

If 75.0 of the isotopes of an element have a mass of 39.0 and 25.0% of the isotopes have a mass of 36.0 amu, what is the atomic mass of the element?

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If 75.0 of the isotopes of an element have a mass of 39.0 and 25.0% of the isotopes have a mass of 3...

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