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Chemistry, 07.07.2021 06:40 rdemp6105

Zn-64 = 48.63% Zn-66 = 27.90%
Zn-67 = 4.10%
Zn-68 = 18.75%
Zn-70 = .62%
Calculate the average atomic mass/given their percent abundance

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Zn-64 = 48.63% Zn-66 = 27.90%
Zn-67 = 4.10%
Zn-68 = 18.75%
Zn-70 = .62%
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