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The Average Atomic Mass of Zinc Is 65

Question 1

Multiple Choice

The average atomic mass of zinc is 65.39 amu. Given the data in the following table, what is the natural abundance of 66Zn? Isotope
Mass (amu)
Natural Abundance (%) 64Zn
63) 9291
48) 8966Zn
65) 9260
?67Zn
66) 9271
4) 1168Zn
67) 9249
18) 5670Zn
69) 9253
0) 62


A) 27.81%
B) 0.2781%
C) 50.00%
D) 2.781%
E) 28.71%

Correct Answer:

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