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The astronaut then measures the abundance of silicon on the new planet, obtaining the following results: Isotope Abundance (%) Mass (amu) 28Si 73.71 27.98 29Si 14.93 28.98 30Si 11.36 29.97 What is the
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The astronaut then measures the abundance of silicon on the new planet, obtaining the following results:

Isotope Abundance
(%) Mass
(amu)
28Si 73.71 27.98
29Si
14.93 28.98
30Si 11.36 29.97
What is the atomic mass of silicon for this planet?

User Kimy
by
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1 Answer

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To calculate the average mass of the element, we take the summation of the product of the isotope mass and the percent abundance.In this case, it becomes 28*0.7371 + 29*0.1493 + 30 *0.1136. This is equal to 28.376 g/mol.
User Christiaan Adams
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