the atomic masses of the two stable isotopes of copper, (69.17 percent) and Cu (30.83 percent), are 62.9296 amu and…

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the atomic masses of the two stable isotopes of copper, (69.17 percent) and Cu (30.83 percent), are 62.9296 amu and…

the atomic masses of the two stable isotopes of copper, (69.17 percent) and Cu (30.83 percent), are 62.9296 amu and 64.9278 amu, respectively. Calculate the average atomic mass of copper.