Chemistry, 05.07.2019 02:30, deborah0

2suppose that a new element (e) were discovered that existed as three natural isotopes: 25% of atoms had a mass of 278, 38% had a mass of 281, and the remained had a mass of 285. what would be listed as the atomic mass of this element? explain your logic and show all steps.

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2suppose that a new element (e) were discovered that existed as three natural isotopes: 25% of atom...