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10-06-2016
Chemistry

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The mass of 69Ga is 68.7200 amu . The mass of 71Ga is 70.9200 amu .

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12-06-2016

I'm not sure if what this question is asking but ill be assuming that the average molecular mass is required. An assuming that the abundance of each isotope is 50% the average molecular mass is 69.82 amu.

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