Mathematics, 20.10.2020 02:01, wgdelgado

The mass of an atom of helium is about 4.002 atomic units. The mass of an atom of beryllium is about 2.25 times greater than that of helium. What is the approximate mass of a beryllium atom?

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The mass of an atom of helium is about 4.002 atomic units. The mass of an atom of beryllium is about...