Answer:
Guys the Answer is C
Explanation:
Just took the test on edg 2021
The average atomic mass is also known as the atomic weight
The average atomic mass of the element M is approximately 32.755 amu
Reason:
Given that, based on a similar question, the question parameters are;
[tex]\begin{array}{|c|c|c|}\mathbf{Isotope}&\mathbf{Atomic \ mass}&\mathbf{ Percentage \ Natural \ Abundance}\\&&\\M-32&31.8564 \ amu&18.99 \ \%\\M-33&32.9903 \ amu&\end{array}\right][/tex]
The percentage abundance of the isotope M-33 is 100 % - 18.99 % = 81.01 %
[tex]Average\ ataomic \ mass = \dfrac{\sum ((Mass \ of \ isotope) \times (Percentage \ relative \ abundance))}{100}[/tex]
The average atomic mass, or atomic weight of element M is therefore;
[tex]Average\ ataomic \ mass = \dfrac{ ((31.8564 \times 18.99 + 32.9903 \times 81.01))}{100} \approx 32.775[/tex]
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