Question 22.5 pts Gallium consists of two isotopes of masses 68.95 amu and 70.95 amu with...
Question 22.5 pts
Gallium consists of two isotopes of masses 68.95 amu and 70.95 amu with abundances of 60.16% and 39.84%, respectively. What is the average atomic mass of gallium?
| 69.95 |
| 71.95 |
| 70.15 |
| 69.75 |
Homework Answers
average atomic mass = sum of individual isotope mass x relative abundance.
average atomic mass = (68.95 x 60.16 / 100) + (70.95 x 39.84 / 100)
average atomic mass = 41.48 + 28.27
average atomic mass = 69.75
answer = 69.75
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Question 22.5 pts
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