The element Eu occurs naturally as a mixture of 47.82% 152Eu, whose mass is 150.9 amu and
52.18% 153Eu, whose mass is 152.9 amu. Calculate the average atomic mass of Eu.
A.15.194 amu
B.151.94 amu
C.1519.4 amu
D.15194 amu

The element Eu occurs naturally as a mixture of 47.82% 152 Eu, whose mass is 150.9 amu and 52.18% 153 Eu, whose mass is 152.9 amu. We need to find the average atomic mass of Eu. It can be calculated as follows :

[tex]M=47.82\%\ \text{of}\ 150.9+52.18\%\ \text{of}\ 152.9\\\\M=\dfrac{47.82}{100}\cdot150.9+\dfrac{52.18}{100}\cdot152.9\\\\M=151.94\ \text{amu}[/tex]

So, the average atomic mass of Eu is 151.94 amu.

The element Eu occurs naturally as a mixture of 47.82% 152Eu, whose mass is 150.9 amu and 52.18% 153Eu, whose mass is 152.9 amu. Calculate the average atomic mass of Eu. A.15.194 amu B.151.94 amu C.1519.4 amu D.15194 amu

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The element Eu occurs naturally as a mixture of 47.82% 152Eu, whose mass is 150.9 amu and
52.18% 153Eu, whose mass is 152.9 amu. Calculate the average atomic mass of Eu.
A.15.194 amu
B.151.94 amu
C.1519.4 amu
D.15194 amu