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02-10-2020
Chemistry

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PLEASE HELP ASAP
A sample of element X contains 100 atoms with a mass of 12.00 and 10 atoms with a mass of 14.00
Calculate the average atomic mass (in amu) of element X

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aundreahardamon aundreahardamon

02-10-2020

Answer:

The average atomic mass of an element is calculated by taking the weighted average of the atomic masses of its stable isotopes.

In other words, each stable isotope will contribute to the average mass of the element proportionally to its abundance.

avg. atomic mass

=

∑

i

(

isotope

i

×

abundance

i

)

Explanation:

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