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OpenStudy (anonymous):
The element Gallium has two stable isotopes, Gallium-69 and Gallium-71. Gallium-69 has a molar mass of 68.9256 g/mol and Gallium-71 has a molar mass of 70.9247 g/mol. Gallium-69 has a relative abundance of 60.11% and Gallium- 71 has a relative abundance of 39.89%. What is the average atomic mass of Gallium?
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OpenStudy (anonymous):
I don't know
OpenStudy (aaronq):
\(average\;atomic\;mass=\Sigma (mass_{Gallium-i}*\%abundance_{Gallium-i})\)
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