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searching for Atomic mass unit 31 found (70 total)

Dalton (unit) (3,637 words) [view diff] exact match in snippet view article

The dalton or unified atomic mass unit (symbols: Da or u) is a non-SI unit of mass defined as 1/12 of the mass of an unbound neutral atom of carbon-12

Relative atomic mass (2,334 words) [view diff] exact match in snippet view article find links to article

ratio of the average mass of the atom to the unified atomic mass unit. Here the "unified atomic mass unit" refers to 1⁄12 of the mass of an atom of 12C in

Milli mass unit (296 words) [view diff] exact match in snippet view article find links to article

more formally correct "milli unified atomic mass unit" (mu) and equivalent to 1⁄1,000 of the unified atomic mass unit (u). A more modern name is the millidalton

Mass (mass spectrometry) (2,222 words) [view diff] exact match in snippet view article

atomic mass unit (symbol: u) is equivalent to the dalton. One dalton is approximately the mass of one a single proton or neutron. The unified atomic mass

Stable-isotope probing (987 words) [view diff] exact match in snippet view article find links to article

16O (two atomic mass units) is twice that between 13C and 12C (one atomic mass unit), so incorporation of 18O into DNA will cause a larger per atom density

Avogadro constant (2,229 words) [view diff] exact match in snippet view article find links to article

exactly 0.012 kg. On the other hand, the dalton (a.k.a. universal atomic mass unit) remains unchanged as 1⁄12 of the mass of 12C. Thus, the molar mass

Non-SI units mentioned in the SI (803 words) [view diff] exact match in snippet view article find links to article

official unit gal Gal acceleration 1 Gal = 1 cm/s2 = 0.01 m/s2 unified atomic mass unit u mass 1 u = 1 Da volt-ampere reactive var reactive power 1 var = 1 VA

Thomson (unit) (730 words) [view diff] exact match in snippet view article

where Da is the symbol for the unit dalton (also called the unified atomic mass unit, symbol u), and e is the elementary charge which is the unit of electric

2019 redefinition of the SI base units (9,133 words) [view diff] exact match in snippet view article find links to article

(IUPAC) approved the use of the dalton as an alternative to the unified atomic mass unit with the qualification that the CGPM had not given its approval. This

Neutron (12,184 words) [view diff] exact match in snippet view article find links to article

referred to as nucleons. Nucleons have a mass of approximately one atomic mass unit, or dalton (symbol: Da). Their properties and interactions are described

Ion cyclotron resonance (649 words) [view diff] exact match in snippet view article find links to article

value 1.602×10−19 C, the mass of the ion m is often given in unified atomic mass unit or dalton: 1 u = 1 Da ≈ 1.660539040(20) × 10−27 kg, the magnetic field

Molecular mass (1,509 words) [view diff] exact match in snippet view article find links to article

molecular masses as defined are dimensionless. However, the name unified atomic mass unit (u) is still used in common practice. For example, the relative molecular

Isotopes of carbon (1,502 words) [view diff] exact match in snippet view article find links to article

been experimentally observed to occur in this nuclide. The unified atomic mass unit is defined as 1/12 of the mass of an unbound atom of carbon-12 in its

Trace metal stable isotope biogeochemistry (13,523 words) [view diff] exact match in snippet view article find links to article

isotopic fractionation is also commonly described in units of per mil per atomic mass unit. In many cases, the δ56Fe value can be related to the δ57Fe and δ58Fe

Atomic radii of the elements (data page) (863 words) [view diff] exact match in snippet view article

see Covalent radius. Just as atomic units are given in terms of the atomic mass unit (approximately the proton mass), the physically appropriate unit of

Foot–pound–second system of units (1,120 words) [view diff] exact match in snippet view article find links to article

the mole was directly derived from the mass unit as (mass unit)/(atomic mass unit). The unit (lbf⋅s2/ft)-mol also appears in a former definition of the

Mole (unit) (3,299 words) [view diff] case mismatch in snippet view article

2018-10-23. Retrieved 24 October 2018. Barański, Andrzej (2012). "The Atomic Mass Unit, the Avogadro Constant, and the Mole: A Way to Understanding". Journal

TI-36 (1,401 words) [view diff] exact match in snippet view article find links to article

main constants menu, there is a bug on the sixteenth menu entry for atomic mass unit, "u", which should display as "Atomic Mass U". When this entry is displayed

Molar mass constant (1,055 words) [view diff] exact match in snippet view article find links to article

in Table 8 on non-SI units states: "The dalton (Da) and the unified atomic mass unit (u) are alternative names (and symbols) for the same unit, equal to

Calcium (5,879 words) [view diff] exact match in snippet view article find links to article

enriched in heavier isotopes at a magnitude of roughly 0.025% per atomic mass unit (amu) at room temperature. Mass-dependent differences in calcium isotope

Amount of substance (3,601 words) [view diff] exact match in snippet view article find links to article

for his work in measuring the Avogadro constant. 1959/1960: Unified atomic mass unit scale based on m(12C) = 12 u adopted by IUPAP and IUPAC. 1968: The

Cesare Emiliani (1,577 words) [view diff] exact match in snippet view article find links to article

deep-sea species. Nature 366:217–218 Emiliani C (1995) Redefinition of atomic mass unit, Avogadro constant, and mole. Geochimica et Cosmochimica Acta 59:1205–1206

Mass (10,141 words) [view diff] exact match in snippet view article find links to article

and thus scientists developed the dalton (also known as the unified atomic mass unit). By definition, 1 Da (one dalton) is exactly one-twelfth of the mass

John Dalton (5,435 words) [view diff] exact match in snippet view article find links to article

use the unit of mass dalton (symbol Da), also known as the unified atomic mass unit, equal to 1/12 the mass of a neutral atom of carbon-12). The dalton

Ion acoustic wave (2,077 words) [view diff] exact match in snippet view article find links to article

Ai=mi/mu{\displaystyle A_{i}=m_{i}/m_{u}}, mu{\displaystyle m_{u}} is the atomic mass unit, u2=muvs2/Te{\displaystyle u^{2}=m_{u}v_{s}^{2}/T_{e}}, and τi=γiTiAiTe{\displaystyle

Computational chemistry (8,344 words) [view diff] exact match in snippet view article find links to article

methods. This complicates the study of molecules interacting with high atomic mass unit atoms, such as transitional metals and their catalytic properties.

Mars Orbiter Mission (7,923 words) [view diff] exact match in snippet view article find links to article

analysing the neutral composition of particles in the range of 1–300 amu (atomic mass unit) with unit mass resolution. The heritage of this payload is from Chandra's

Chemical element (9,881 words) [view diff] exact match in snippet view article find links to article

particular environment, weighted by isotopic abundance, relative to the atomic mass unit. This number may be a fraction that is not close to a whole number

Chandrayaan programme (9,162 words) [view diff] exact match in snippet view article find links to article

surface, during which it detected the clear presence of molecules with atomic mass unit 18 i.e., water. The ionized water molecules (H₂O⁺) and their fragments

Xenon isotope geochemistry (4,996 words) [view diff] exact match in snippet view article find links to article

Earth's atmospheric Xe is enriched in heavy isotopes by 3 to 4% per atomic mass unit (amu). However, the total abundance of xenon gas is depleted by one

List of conversion factors (1,593 words) [view diff] exact match in snippet view article find links to article

Mass Name of unit Symbol Definition Relation to SI units atomic mass unit, unified u; AMU Same as dalton (see below) ≈ 1.660539040(20)×10−27 kg atomic