A hypothetical element, E, has two stable isotopes. One isotope has a natural abundance of 66.909% and has an atomic mass of 46.477 u. If the atomic weight of E is 47.918 u, what is atomic mass (in units of u) of the second isotope

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.