Answer :
Final answer:
Chlorine's atomic mass of 35.5 amu accounts for its naturally occurring isotopes, Cl-35 and Cl-37, which exist in approximately 75.76% and 24.24% proportions respectively.
Explanation:
Chlorine, which exists in nature in two isotopic forms, Cl-35 and Cl-37, has an average atomic mass recorded as 35.5 amu. This value is a weighted average, taking into account the relative abundance of different isotopes. Therefore, solving an equation that considers the relative abundances and atomic masses of each of these isotopes will yield a proportion of approximately 75.76% for Cl-35 and 24.24% for Cl-37. These percentages mean that a typical sample of chlorine will contain these proportions of the different isotopes.
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