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Copper Occurs in an Isotopic Mixture of 69

Question 49

Multiple Choice

Copper occurs in an isotopic mixture of 69.09% 63Cu (mass = 62.93 u per atom) and 30.91% 65Cu (mass = 64.93 u per atom) .What is the average atomic mass of copper?


A) 64.00 u
B) 63.55 u
C) 63.45 u
D) 64.31 u
E) 29.00 u

Correct Answer:

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