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15-12-2022
Chemistry

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8. Rubidium is a soft, silvery white metal. The two naturally occurring isotopes of rubidium
are rubidium-85, with an atomic mass of 84.91179 amu; and rubidium-87, with an atomic
mass of 86.90919 amu. What are the percent natural abundances of these isotopes? Box
your answers.

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