Also Known As: 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.
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When the existence of isotopes was discovered in 1912 and isotopic oxygen in 1929, the definition based on oxygen became confusing. 1  Some scientists used an AMU based on the natural abundance of oxygen, while others used an AMU based on the oxygen-16 isotope. 2  However, u and Da were not universally adopted.
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Atomic Mass or Weight Definition. Atomic mass or atomic weight is the average mass of atoms of an element, calculated using the relative abundance of isotopes in a naturally-occurring element. Atomic mass indicates the size of an atom.
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Examples of Values Expressed in Atomic Mass Units. 1  A hydrogen-1 atom has a mass of 1.007 u (or Da or amu). 2  A carbon-12 atom is defined as having a mass of 12 u. 3  The largest known protein, titin, has a mass of 3 x 106 Da. 4  AMU is used to differentiate between isotopes.
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This is the definition of atomic mass or atomic weight, along with examples and links explaining how to calculate atomic mass. This is the definition of atomic mass or atomic weight, along with examples and links explaining how to calculate atomic mass. Atomic Mass Definition - Atomic Weight Search the site GO
https://www.thoughtco.com/definition-of-atomic-mass-weight-604375
Also Known As: 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.
https://www.thoughtco.com/definition-of-atomic-mass-unit-amu-604366
The atomic mass of carbon is 12.011. Most carbon atoms consist of 6 protons and 6 neutrons. The atomic mass of hydrogen is 1.0079. Hydrogen (atomic number 1) is the element that has the lowest atomic mass. The most common isotope of hydrogen is protium, an atom that consists of a proton or a proton and an electron.
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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.
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This is the chemistry definition of an atomic mass unit or amu and how much an amu is in kilograms and grams. This is the chemistry definition of an atomic mass unit or amu and how much an amu is in kilograms and grams. Atomic Mass Unit Definition (amu) Search the site GO
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Atomic Mass Unit or AMU Definition. An atomic mass unit or amu is one twelfth of the mass of an unbound atom of carbon-12. It is a unit of mass used to express atomic masses and molecular masses.
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chemistry amu definition
In Chemistry, an atomic mass unit is one twelfth of the mass of an unbound atom of carbon-12. An atomic mass unit is one twelfth of the mass of an unbound atom of carbon-12.