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May 22, 2015

Homework Help: chemistry

Posted by 000 on Friday, October 29, 2010 at 10:48pm.

there are two naturally occurring isotopes of the element zinc. the relative abundance and mass of each are as follow
64
30zn=48.89% 63.929 amu

66
30zn=27.81% 65.926

is it 0.4889(63.929)+027.81(65.926) divide by 2?

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