混合物 mixture 相对原子质量 relative atomic mass(abbr. Ar) 相对分子质量 relative molecular mass (abbr. Mr) 化学式量 relative formula mass 物质的量 amount of substance 阿伏加德罗常数 Avogadro constant (abbr. NA) 摩尔mole 摩尔质量 molar mass 实验式/最简式/经验式 empirical formula 气体摩尔体积 mol...
If an atom has 17 electrons, 20 neutrons, and 19 protons, what is its approximate atomic mass? The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the binding energy per nucleon (in J) of a cobalt-62 nucleus? (The mass of a ...
understanding, however, that there are significant weather differences between the north and south coast of Puerto Rico. The south coast reflects an arid environment with a northern mountain range barrier, while the north is
Domesticated species are impacted in unintended ways during domestication and breeding. Changes in the nature and intensity of selection impart genetic drift, reduce diversity, and increase the frequency of deleterious alleles. Such outcomes constrain our ability to expand the cultivation of crops into e...
The content of cobalt was 0.53% and 0.12% (w/w) in pristine and HCl-treated MWCNT (determination by atomic absorption spectroscopy). The diameter of the MWCNT was in the range of 10–16 nm with a N2-BET surface area of 253 m2 Exposure atmosphere characterization The solid aerosol size ...
CEC content was measured using the standard method “Determination of Cation Exchange Capacity (CEC)—Hexamminecobalt Trichloride Solution—Spectrophotometric Method (HJ 889–2017)” [25]. OM content was measured using the standard method “Determination of Organic Carbon—Potassium Dichromate Oxidation ...
Specifically, the atomic configurations of X-substituted γ′-Co3Nb were determined according to the site preference of transition metal element X in γ′-Co3Nb, and on this basis, the structural stability and mechanical properties of ternary X-substituted γ′-Co3Nb were evaluated. By ...