Gallium has two naturally occurring isotopes. 69Ga (68.9257 amu) is the more abundant isotope, at 60.400%. If the atomic mass of
gallium is 69.723 amu, what is the mass of the other isotope, 71Ga
1 answer:
Answer:
70.9391 amu
Explanation:
The abundance of the second isotope is 100 - 60.4% = 39.6%.
We can solve this problem by keeping in mind the <em>following formula for atomic mass</em>:
- Atomic mass = Mass of Isotope 1 * Abundance + Mass of Isotope 2 * Abundance
We<u> input the given data</u>:
- 69.723 = 68.9257 * 60.4/100 + Mass of Isotope 2 * 39.6/100
- Mass of Isotope 2 = 70.9391 amu
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