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Given the mean atomic mass of chlorine prepared in the laboratory to be 35.5 and...

Chemistry
JAMB 1980
Given the mean atomic mass of chlorine prepared in the laboratory to be 35.5 and assuming that chlorine contains two isotopes of mass number 35 nad 37, what is the percentage composition of the isotope of mass number 35?
  • A. 20
  • B. 25
  • C. 50
  • D. 75
  • E. 90
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Correct Answer: Option D
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