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snow_tiger [21]
3 years ago
8

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

Chemistry
1 answer:
CaHeK987 [17]3 years ago
7 0
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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The atomic mass of an atom if its mass is approximately equal to carbon-12 will be 12 and in case of 4.5 times carbon-12 will be 54

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