Answer :
Answer: The average atomic mass of chlorine is 35.45 amu
Explanation:
Mass of isotope - 35 = 34.969 amu
% abundance of isotope-35 = 75.77% = [tex]\frac{75.77}{100}=0.7577[/tex]
Mass of isotope - 37 = 36.966 amu.
% abundance of isotope-37 = 24.23% = [tex]\frac{24.23}{100}=0.2423[/tex]
Formula used for average atomic mass of an element :
[tex]\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})[/tex]
[tex]A=\sum[(34.969 \times 0.7577)+(36.966 \times 0.2423)[/tex]
[tex]A=35.45amu[/tex]
Therefore, the average atomic mass of chlorine is 35.45 amu