| 词汇 | example_english_atomic-mass |
| 释义 | Examples of atomic massThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Heavy hydrogen could be separated from the ordinary hydrogen isotopes of atomicmass 1 at a cost of about £25,000 a ton. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 O, where the 16, 17 and 18 refer to the atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This means low atomicmass elements are favoured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One unified atomicmass unit is approximately the mass of one a single proton or neutron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is numerically equal to the relative atomicmass (or atomic weight) in grams. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It serves to define the atomicmass unit and is, by definition, equal to 1 u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As of 2003, at least 33 radioisotopes have also been synthesized, ranging in atomicmass from 60 to 92. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, a sample of chlorine contains 75.8% chlorine-35 and 24.2% chlorine-37, giving an average atomicmass of 35.5 atomicmass units. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It also showed that a radioactive element may have more than one atomicmass though the chemical properties are identical. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Melting points, boiling points, and bond lengths increase with the atomicmass of the halide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Fullerenes are comparatively large and massive objects, having an atomicmass of about 720 u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, atomic weight, ie, relative atomicmass, is a dimensionless quantity, and can not take the units of grams per mole. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, because oxygen-17 and oxygen-18 are also present in natural oxygen this led to two different tables of atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These are significant in helium because of its low atomicmass of about four atomicmass units. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is shorter than any other carbonhalogen bond, and shorter than single carbonnitrogen and carbonoxygen bonds, despite fluorine having a larger atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. His periodic table had the form of a spiral and the elements were placed into the structure according to their atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This notation eases data interpretation since it is numerically more related to the unified atomicmass unit. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, the average atomicmass of lithium and potassium was close to the atomicmass of sodium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Due to higher atomicmass, any helium in the envelope will have sunk beneath the hydrogen layer. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since this time it is operational and deleivers high-precision ionic and atomicmass values necessary to solve fundamental physics problems. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Molecular masses are calculated from the relative atomic masses of each nuclide, while molar masses are calculated from the atomicmass of each element. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Platinum also has 31 synthetic isotopes ranging in atomicmass from 166 to 202, making the total number of known isotopes 37. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Si, which has a relative atomicmass of. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its isotopic composition would be measured with a mass spectrometer to determine its average relative atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Thirty-six radioisotopes have been synthesized ranging in atomicmass from 169 to 205. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The quantity of the element which weighs equal to its gram atomicmass is called one gram atom of that element. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The precision of the molecular mass is determined by precision of the least precise atomicmass value, in this case that of carbon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With an atomicmass of 1.00794 amu, hydrogen is the lightest element. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This single nuclide will have a characteristic atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pu, and thus a standard atomicmass can not be given. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One unified atomicmass unit is approximately the mass of one nucleon (either a single proton or neutron) and is equivalent to 1 g/mol. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At least 10 nuclear isomers have been described, ranging in atomicmass from 66 to 84. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The average atomicmass of natural uranium is 238.02891(3) u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The primary focus of this field is the study of heavy-ion collisions, as compared to lower atomicmass atoms in other particle accelerators. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The number of moles may be converted to grams by multiplying by the atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When expressed in such units, the atomicmass is called the relative isotopic mass (see section below). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Samples of these elements therefore may serve as reference standards for certain atomicmass values. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomicmass unit is convenient for expressing the masses of atoms and molecules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because it is an artificial element, a standard atomicmass can not be given, and it has no stable isotopes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For atomicmass spectrometry, a sample must also be ionized. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At least 27 radioisotopes have also been synthesized ranging in atomicmass from 58 to 89. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It produces two charged asymmetrical fission products with maximally probable charged product at 9515 and 13515 u atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The increase in density is due to the increase in atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At least 32 nuclear isomers have also been characterized, ranging in atomicmass from 170 to 200. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomicmass takes into account the isotopic distribution of the element in a given sample (usually assumed to be normal). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nuclides starting from with the isotope niobium-93 and extending to all higher atomicmass numbers, could theoretically experience spontaneous fission. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomicmass of these isotopes varied by integer amounts, called the whole number rule. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Dysprosium also has at least 11 metastable isomers, ranging in atomicmass from 140 to 165. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Twenty-nine radioisotopes have also been synthesized, ranging in atomicmass from 138 to 173. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Atomicmass figures are thus commonly reported to many more significant figures than atomic weights. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The term "atomic weight" is being phased out slowly and being replaced by "relative atomicmass", in most current usage. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In atomicmass spectrometry, these ions are detected. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is fixed by the definitions of the mole and of relative atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The unified atomicmass unit has a value of. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The third type of separation is still experimental; practical separation techniques all depend in some way on the atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another way of stating this, is that, for these elements, the relative atomicmass and atomicmass are the same. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomicmass of an element expressed in grams is called gram atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Californium is one of the highest atomicmass elements to have been produced in weighable amounts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The relative atomicmass (a weighted average) of these isotopes is the atomic weight listed for the element in the periodic table. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A standard atomicmass can not be given. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As of 2003, at least 32 radioisotopes have also been synthesized, ranging in atomicmass from 81 to 113. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The standard atomicmass is 39.0983(1) u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The standard atomicmass (abundance-weighted average of the stable isotopes) is 207.2(1) u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As such, it is considered a monoisotopic element and it has a standard atomicmass:. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In atomicmass unit, the mass of the proton is whereas that of the neutron is. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, none of these tables were correctthe 19th century tables arranged the elements in order of increasing atomic weight (or atomicmass). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many antibacterial compounds are relatively small molecules with a molecular weight of less than 2000 atomicmass units. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The electron relative atomicmass also enters into the calculation of all other relative atomic masses. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It contains the name, symbol, atomic number, and mean atomicmass value for the natural isotopic composition of each element. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In particular, reaction rates are very slightly affected by atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomicmass, on the other hand, is measured using the atomicmass unit based on the mass of the carbon-12 atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The atomic masses of naturally occurring isotopes of an element determine the atomicmass of the element. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The standard unit of atomicmass, one twelfth of the mass of a ground state carbon-12 atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This gives chlorine a relative atomicmass of 35.5 (actually 35.4527 g/mol). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Objectors to the name usually prefer the term relative atomicmass (not to be confused with atomicmass). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The calculation is exemplified for silicon, whose relative atomicmass is especially important in metrology. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are arranged by atomic number and atomicmass. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has the highest atomic number and highest atomicmass of all the elements discovered so far. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, he chose to fix the atomicmass of oxygen as 100, an innovation that did not catch on. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At least 25 nuclear isomers have been described, ranging in atomicmass from 84 to 104. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An accurate atomicmass for samples of lithium can not be measured for all sources of lithium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The light isotope of hydrogen, for example, with a single proton, has an atomicmass of 1.007825 u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The standard atomicmass is 28.0855(3) u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The numbers refer to the atomicmass number for each isotope, or the number of protons and neutrons in the atomic nucleus. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The "m" refers to the molecular or atomicmass number and "z" to the charge number of the ion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has 83 protons and 126 neutrons, and an atomicmass of 208.9803987 u. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because of its low atomicmass, it has a high charge- and power-to-weight ratio. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Counting the scintillations, they noticed that metals with higher atomicmass, such as gold, reflected more alpha particles than lighter ones such as aluminium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomicmass of 85.4678. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a short form of the tongue-breaking but formally more correct milli unified atomicmass unit (mu) and equivalent to 1/1000 of the unified atomic mass unit (u). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most of the isotopes with atomicmass numbers below 14 decay to isotopes of carbon, while most of the isotopes with masses above 15 decay to isotopes of oxygen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For the natural isotopic composition of each element it shows "name", "atomic number", "symbol", "atomic weight" (or relative atomicmass) and a link to the element's "isotopes". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its atomicmass is 4.02781 0.00011. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Before the discovery of isotopes, empirically determined noninteger values of atomicmass confounded scientists. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its atomicmass is 91.224. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Relative isotopic mass is similar to atomicmass and has exactly the same numerical value as atomicmass, whenever atomicmass is expressed in unified atomicmass units. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, every atom of oxygen-16 is expected to have exactly the same atomicmass (relative atomicmass) as every other atom of oxygen-16. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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