Wanat jest mieszanina dwoch odmian izotopowych o 28n i 27n. Oblicz zawartosc procentowa dwoch izotopow. Jezeli srednia masa wynosi 50,94u
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27+23=50
⁵⁰V
A₁=50
%x₁=?
28+23=51
⁵¹V
A₂=51
%x₂=?
mat=50,94u
%x₁-x
%x₂-100-x
mat=A₁*%x₁+A₂*%x₂ / 100%
50,94=50*x+51*(100-x) / 100% /*100%
5094=50x+5100-51x
5094-5100=-x
-6=-x /*(-1)
x=6
100-6=94
⁵⁰V=6%
⁵¹V=94%