Answer to Question #54614 in Inorganic Chemistry for alex

Question #54614
In nature, the element X consists of two naturally occurring isotopes. 107X with abundance 55.84% and isotopic mass 106.9051 amu and 109X with isotopic mass 108.9048 amu. Use the given information to calculate the atomic mass of the element X to an accuracy of .001% (Report your answer like this yyy.yyyy)
1
Expert's answer
2015-09-13T04:19:33-0400
«W» is the mass fraction (abundance) of the isotope (%);
W(107X) = 55.84%;
W(109X) = 100 – 55.84 = 44.16%;
Ar – the relative atomic mass (a.m.u.) of the element. Symbol: u;
Ar107X = 106.9051 amu (u);
Ar109X = 108.9048 amu (u);
ArX=W(107X)*Ar107X+W(109X)*Ar109X
ArX = 106.9051*0.5584 + 108.9048*0.4416 = 59.6958 + 48.0924 = 107.7882 amu (u);
Answer: 107.7882

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS