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Chemistry, 17.12.2020 22:40 nati5720

A sample of unknown element X contains the following isotopes:
80% of 64X, 15% of “x, and 5% of x. What is the average
atomic mass of element X?
66

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A sample of unknown element X contains the following isotopes:
80% of 64X, 15% of “x, and 5%...

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