http://www.estiloskateboards.com/element-complete-2/
complete the following table of isotopic information for the element neon (Ne) isotope mass (amu) abundance?
complete the following table of isotopic information for the element neon (Ne)
(amu) abundance
20Ne 19.99 ______%
21Ne 20.99 .257%
22Ne 21.99 ______%
also
Silicon has three stable isotopes in nature as shown in the table below. fill in the missing information
mass (amu)
28Si 27.98 ____%
29Si ____ 4.70%
32Si 29.97 3.09%
The proportion of isotopes must add to 100%, so
(19.99)(x) + (20.99)(.257%) + (21.99)(1 – .257% – x) = MW(Ne)
Solve for x
Pro forma for Si
w
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