atomic mass = 69.72 amu
isotope 1: mass = 68.926 amu f.a. = 1 - x
isotope 2: mass = 70.925 amu f.a. = x
Gallium (Ga) consists of two naturally occurring isotopes with masses of 68.926 and 70.925 amu.
The average atomic mass of Ga is 69.72 amu. Calculate the abundance of each isotope.
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