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Chemistry, 24.10.2021 09:40 natetheman7740
A fictitious element X is composed of 10.0 percent of the isotope 55 X, 20.0 percent of the isotope 56 X, and 70.0 percent of the isotope 57 X. Estimate the atomic mass of element X.
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A fictitious element X is composed of 10.0 percent of the isotope 55 X, 20.0 percent of the
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