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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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OpenStudy (aaronq):
It's a weighted average, \(\sf Mass_{average}=\sum (mass_i*abundance_i)\) in other words, multiply the mass of each isotope by it's abundance and add these values together.
OpenStudy (clamin):
what is the mass?? @aaronq
OpenStudy (aaronq):
X-10 is 10 and X-11 is 11
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