Two isotopes of gallium are naturally occurring, with 69 31Ga at 60.11% 168.93 amu2 and
Chapter 0, Problem 4.37(choose chapter or problem)
Two isotopes of gallium are naturally occurring, with \({ }_{31}^{69} \mathrm{Ga}\) at 60.11% (68.93 amu) and \({ }_{31}^{71} \mathrm{Ga}\) at 39.89% (70.92 amu). Calculate the atomic mass for gallium using the weighted average mass method.
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