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

Atomic mass unit definition is - a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to 1/12 the mass of a single atom of ...

chem.libretexts.org/Bookshelves/Introductory_Chemistry/Book%3A_Introductory_Chemistry_(CK-12)/04%3A_Atomic_Structure/4.18%3A_Atomic_Mass_Unit

Jun 16, 2021 ... By definition, one atom of carbon-12 is assigned a mass of 12 atomic mass units (amu). An atomic mass unit is defined as a mass equal to one ...

www.theochem.ru.nl/~pwormer/Knowino/knowino.org/wiki/Unified_atomic_mass_unit.html

Dec 23, 2010 ... The unified atomic mass unit (u), or dalton (Da), is a unit of atomic and molecular mass. By definition it is one twelfth of the mass of an ...

www.khanacademy.org/science/chemistry/atomic-structure-and-properties/introduction-to-the-atom/v/average-atomic-mass

The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the ...

www.chem.ucla.edu/~harding/IGOC/A/amu.html

Atomic mass unit (amu; dalton): A unit of mass equal to exactly 1/12 the mass of oneC atom, or 1.660538921 x 10−27 kg. This is the approximate mass of one ...

www.youtube.com/watch?v=S1HPZCR4xBc

In nuclear physics, scientists use a mass which is more convenient for tiny particles of small mass. It is the #atomic_mass unit represented ...

www.universetoday.com/51640/atomic-mass-unit

Jan 21, 2010 ... Believe it or not, there are actually several atomic mass units … however, the one that's standard – throughout chemistry, physics, biology, ...

mass-spec.lsu.edu/msterms/index.php/Unified_atomic_mass_unit

Aug 9, 2019 ... Note: The abbreviation amu for atomic mass unit is deprecated; it has been used to denote atomic masses measured relative to a single atom of 16 ...

www.westfield.ma.edu/PersonalPages/cmasi/gen_chem1/Atomic%20and%20molar%20mass/atomic_and_molar_mass.htm

Atomic mass is based on a relative scale and the mass of 12C (carbon twelve) is defined as 12 amu. Why do we specify 12C? We do not simply state the the mass of ...

www.montgomerycollege.edu/_documents/academics/support/learning-centers/ackerman-learning-center-rockville/atomic-weights.pdf

Atomic Mass. • One atomic mass unit (amu): the mass exactly equal to one-twelfth the mass of one carbon-12 atom that has six protons and six neutrons.

en.wikipedia.org/wiki/Dalton_(unit)

The dalton or unified atomic mass unit (symbols: Da or u) is a unit of mass widely used in physics and chemistry. It is defined ...