It's difficult to write it down, but I'll attach you a good example of hydroboration of indene. I hope you'll find it helpful.
I have lungs but no legs. My offspring are found in membranous-shelled eggs and use lungs to breathe.
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Answer:
The percentage abundance of Eu isotopes are 52 % and 48 % .
Explanation:
The formula for the calculation of the average atomic mass is:
Given that:
Since the element has only 2 isotopes, so the let the percentage of first be x and the second is 100 -x.
For first isotope,:
% = x %
Mass = 151.0 amu
For second isotope :
% = 100 - x
Mass = 153.0 amu
Given, Average Mass = 151.96 amu
Thus,
Solving for x, we get that:
x = 52 %
<u>Thus percentage abundance of Eu isotopes are 52 % and 48 % .</u>