The fictitious element concordium (Cn) has two naturally occurring isotopes: 65C (64.8913 u) and 69C (68.9385 u). The atomic mass of concordium is 66.91 u. What is the percentage abundance of 65Cn? Select one: O A. 50.12 % B. 34.11 % C. 41.37 % D. 65.89 % O E. 49.88 %

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The fictitious element concordium (Cn) has two naturally occurring isotopes: 65Cn (64.8913 u) and 69C (68.9385
u). The atomic mass of concordium is 66.91 u. What is the percentage abundance of 65Cn?
Select one:
O A. 50.12 %
B. 34.11 %
C. 41.37 %
D. 65.89 %
O E. 49.88 %
Transcribed Image Text:The fictitious element concordium (Cn) has two naturally occurring isotopes: 65Cn (64.8913 u) and 69C (68.9385 u). The atomic mass of concordium is 66.91 u. What is the percentage abundance of 65Cn? Select one: O A. 50.12 % B. 34.11 % C. 41.37 % D. 65.89 % O E. 49.88 %
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