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en.wikipedia.org/wiki/Unified_atomic_mass_unit

The unified atomic mass unit (symbol: u) or dalton (symbol: Da) is a standard unit of mass that quantifies mass on an atomic or molecular scale (atomic mass). One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol.

whatis.techtarget.com/definition/atomic-mass-unit-AMU-or-amu

An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass ... The mass of an atom in AMU is roughly equal to the sum of the number of  ...

www.dictionary.com/browse/atomic-mass-unit

Atomic mass unit definition, Also called dalton. a unit of mass, equal to 1/12 ( 0.0833) the mass of the carbon-12 atom and used to express the mass of atomic  ...

study.com/academy/lesson/atomic-mass-unit-amu-definition-standard-conversion.html

According to the Royal Society of Chemistry, one atomic mass unit is equal to 1.66 x 10^-27 kg. Where did this number come from? While the history of atomic ...

www.merriam-webster.com/dictionary/atomic%20mass%20unit

Define atomic mass unit: a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to 1/12 the mass of a single atom of the…

www.aqua-calc.com/what-is/weight/atomic-mass-unit

An atomic mass unit (u) is a unit of mass used to express atomic and molecular weights. One atomic mass unit (1u) is defined as one twelfeth (1/12) of the mass ...

goldbook.iupac.org/U06554.html

Non-SI unit of mass (equal to the atomic mass constant), defined as one twelfth of the mass of a carbon-12 atom in its ground state and used to express masses ...

socratic.org/questions/what-is-1-atomic-mass-unit-equal-to

Dec 7, 2015 ... 1 atomic mass unit (a.m.u.) is the mass of a proton or a neutron ... say that the molar mass of a hydrogen is equal to 1gmol and this is because:.

www.collinsdictionary.com/us/dictionary/english/atomic-mass-unit

Atomic mass unit definition: a unit of mass used to express atomic and molecular weights that is equal to one twelfth... | Meaning, pronunciation, translations and ...