We’re being asked to calculate the average atomic mass of Silicon (Si). We can use the following equation:
where atomic mass = average atomic mass of the element and f.a. = fractional abundance of the isotope. To get f.a., we simply need to divide the given percent abundance by 100.
What is the average atomic mass of silicon? Given the following data, calculate the average atomic mass of silicon.
isotope = Si-28
isotope = Si-29
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