The mass of an atom is typically measured in atomic mass units (amu), also known as daltons (Da). One atomic mass unit is defined as one twelfth of the mass of a carbon-12 atom, which is approximately \(1.66 \times 10^{-27}\) kilograms. For practical purposes, atomic mass units are often used to express the mass of atoms and molecules in chemistry and physics.
the mass of an atom is mesured in
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