Question #138266

Copper, a metal known since ancient times, exists in two stable isotopic forms, 6329Cu (69.09%) and 6529Cu (30.91%). Their atomic masses are 62.93 amu and 64.9278 amu respectively. Calculate the average atomic mass of copper.

Expert's answer

Average atomic mass=(69.09%*62.93amu + 30.91%*64.9278amu)/100%=63.5475amu


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