🤓 Based on our data, we think this question is relevant for Professor Norton's class at UGA.
We can use the following equation:
atomic mass = average atomic mass of the element
f.a. = fractional abundance of the isotope.
To get f.a., we simply need to divide the given percent abundance by 100.
The stable isotopes of iron are 54Fe, 56Fe, 57Fe, and 58Fe. The mass spectrum of iron looks like the following:
Use the data on the mass spectrum to estimate the average atomic mass of iron, and compare it to the value given in the periodic table.
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Based on our data, we think this problem is relevant for Professor Norton's class at UGA.
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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.