Interpretation : The weighted
Concept Introduction : The weighted average mass of the atoms in a naturally occurring sample of an element is the atomic mass. The formula of weighted atomic mass is given as:
Answer to Problem 67A
The weighted average atomic mass of nitrogen is
Explanation of Solution
Given information :
The isotope N-14 has an atomic mass of 14.003 amu with 99.67% abundance.
The isotope N-15 has an atomic mass of 15.000 amu with 0.37% abundance.
The weighted average mass of the atoms in a naturally occurring sample of an element is the atomic mass.
The mass and relative
The formula of weighted atomic mass is given as:
To calculate the weighted atomic mass of N-14, substitute the values in the above formula:
To calculate the weighted atomic mass of N-15, substitute the values in the above formula:
The weighted average atomic mass is the average of the weighted atomic masses of N-14 and N-15.
The weighted average atomic mass of nitrogen is
Chapter 4 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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