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Asked Sep 24, 2019
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two isotopes of rubidium occur naturally, Rb with mass of 85 and atomic number of 37 at 72.17% (84.91 amu) and Rb with mass of 87 and atomic number of 37 at 27.83% (86.91 amu). Calculate the atomic mass for rubidium using the weighted average mass method.

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Average atomic mass can be determined...

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Avg.atomicmass-, (isotope,xabundance,

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