The actual mass of an atom at rest is often expressed using the unified atomic mass unit (u), also called dalton (Da). 原子的静止质量通常用统一原子质量单位(u)来表示,也被称作道尔顿(Da)。 LASER-wikipedia2 ass spectrometers, capable of measuring ions of # atomic mass units or greater ...
atomic mass unit 例句 1.What’s more, the large compounds are likely fragments of even larger parent molecules that could weigh thousands of atomic mass units, Postberg says. 2.Previously, Cassini detected lighter, gassy molecules such as methane and ethane, which contain one or two carbon ato...
atomic mass unit n (Units) a unit of mass used to express atomic and molecular weights that is equal to one twelfth of the mass of an atom of carbon-12. It is equivalent to 1.66 × 10–27kg. Abbreviation:amuAlso called:unified atomic mass unitordalton ...
Atomic mass unit is one-twelfth the mass of an atom of carbon-12 (12C), the most common carbon isotope. Nonetheless, the termapproximatematters because the masses of individual atoms in elements -- other than carbon -- are not whole numbers (see above examples). This is because mass is ...
of the mass of an atom of the nuclide12C, the predominant isotope of carbon. The unit, also known as the dalton, is often abbreviated amu, and is designated by the symbol u. The relative atomic mass of a chemical element is the average mass of its atoms expressed in atomic mass units...
Examples of Values Expressed in Atomic Mass Units A hydrogen-1 atom has a mass of 1.007 u (or Da or amu). A carbon-12 atom is defined as having a mass of 12 u. The largest known protein, titin, has a mass of 3 x 106Da. ...
What is the mass of 1 AMU in grams? Atomic mass units can be converted to grams. The following conversion may be used: 1 AMU = 1.66 x 10^-24 grams. Is AMU same as g mol? An AMU is not the same measurement in mass as grams per mole (g mol). Grams per mole is measured in...
today actually refer to unified atomic mass units or u. For standardization a specific atomic nucleus (carbon-12 vs. oxygen-16) had to be chosen because average mass of a nucleon depends on the count of the nucleons in the atomic nucleus due to mass defect. This is also why the mass ...
(1942) n . (1) The mass of a neutral atom of a nuclide. It is usually expressed in terms of the physical scale of atomic masses, that is, in atomic mass units (amu). (2) A unit of mass; one atomic mass unit (amu) is defined as the mass of one atom.nSee amu .See amu...
百度试题 结果1 题目翻译the masses are all in atomic mass units(物理的) 相关知识点: 试题来源: 解析 质量是原子质量的总和.反馈 收藏