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OpenStudy (clamin):
PLEASE HELP!! Element X has 2 natural isotopes. The isotope X-10 has a relative abundance of 19.91%. The isotope X-11 has a relative abundance of 80.09%. Calculate the atomic mass of this element.
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jimthompson5910 (jim_thompson5910):
You would do this calculation 0.1991*(mass of isotope X-10) + 0.8009*(mass of isotope X-11) this is essentially calculating the weighted mean
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