Chemistry, 09.10.2019 06:50 jack1043

Naturally occurring copper contains a mixture of 69.09% copper-63 (63.9298 amu) and 30.91% copper-65 (64.9278 amu). what is the average atomic mass of copper?

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Naturally occurring copper contains a mixture of 69.09% copper-63 (63.9298 amu) and 30.91% copper-65...

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