We will need the atomic mass of Ga, which is 69.723 amu; the atomic mass of Ga-71 is 70.9247050 amu and the natural abundance is 39.982%.
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Convert the natural abundance to a decimal by dividing by 100; the value is 39.982/100 = 0.39982.
Question & Answer: Gallium is a metal which forms compounds with a wide variety of uses. Some of the…..
The natural abundance of the second isotope of Ga is (1 – 0.39982) = 0.60018.
Let the atomic mass of the second isotope be x amu.
Therefore,
70.9247050*0.39982 + x*0.60018 = 67.723
The isotopic mass of the second isotope of Ga is 65.590130 amu (ans).
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