Chemistry, 07.11.2020 01:50, Krazyyykiddd

A certain sample of element X contains 60% of 69X and 40% of 71X. What is the average atomic mass of element X in this sample? Report your answer to the nearest tenth.

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A certain sample of element X contains 60% of 69X and 40% of 71X. What is the average atomic mass of...