Solution

unified atomic mass unit (u), Dalton (Da), universal mass unit, either amu or AMU is an acceptable acronym for atomic mass unit The "unified atomic mass unit" is a physical constant that is accepted for use in the SI measurement system. It replaces the "atomic mass unit" (without the unified part) and is the mass of one nucleon (either a proton or a neutron) of a neutral carbon-12 atom in its ground state. Technically, the amu is the unit that was based on oxygen-16 until 1961, when it was redefined based on carbon-12. Today, people use the phrase "atomic mass unit," but what they mean is "unified atomic mass unit." One unified atomic mass unit is equal to: $$1.66 yoctograms$$ $$1.66053904020 \times 10^{-27} kg$$ $$1.66053904020 \times 10^{-24} g$$ $$931.49409511 MeV/c^{2}$$ $$1822.8839 me$$