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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Tommy Boy Tommy Boy
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11 years ago
An element X has two isotopes, X-63 and X-65.  The relative abundance for X-63 is 69.1% and X-65 is 30.9%.
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dashpupdashpup
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11 years ago
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#2
11 years ago
63.168 and i think it is copper but im sure of the average.and i worked hard for u
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