Given that there are two naturally occurring isotopes of gallium, 69Ga and 71Ga, the natural abundance of the 71Ga isotope must be approximately
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723 amu (atomic mass units). Second, we need to understand that the average atomic mass is a weighted average of all the isotopes of an element, taking into account both their mass and their natural abundance. So, if the average atomic mass is closer to 69, Show more…
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Naturally occurring gallium consists of two isotopes. One of those isotopes is 71Ga with an isotopic mass of 70.9247050 amuand an abundance of 39.892%. What is the mass number of the other isotope?
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There are two stable isotopes of gallium. Their masses are 68.92558 and 70.9247050 amu. If the average atomic mass of gallium is 69.7231 amu, what is the natural abundance of the lighter isotope?
Gallium has two naturally occurring isotopes, ${ }^{69} \mathrm{Ga}$ and ${ }^{71} \mathrm{Ga}$, with masses of $68.9257 \mathrm{u}$ and $70.9249 \mathrm{u}$, respectively. Calculate the abundances of these isotopes of gallium.
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