A. moles = mass × molar mass B. mass = moles × molar mass C. molar mass = moles × mass D. moles = mass + molar mass 相关知识点: 试题来源: 解析 B。本题考查物质的量、质量和摩尔质量的关系。物质的量等于质量除以摩尔质量,即 mass = moles × molar mass。选项 A、C、D 关系错误。
A new diagnostic criterion for malnutrition, the Global Leadership Initiative on Malnutrition (GLIM) criteria, has been proposed. Despite a recognized link between malnutrition and oral health, further clarification is needed regarding this association w
Fourier-transform infrared spectroscopy tests confirmed the adsorption of nitrate ions on the nanoparticle surface. A relationship between the ionic exchange capacity of nanoparticles and the specific heat enhancement of doped molten salts was proposed for the first time....
For example, mean calcium mass scores for <50%, 50% to 74%, and ≥75% stenosis in the left anterior descending coronary artery were 105.1 mg, 157.2 mg, and 302.2 mg, respectively (p < 0.001). Finally, there was a direct relationship between the total Agatston Score at baseline and ...
On the other hand, Raoult’s law assumes that the intermolecular forces that exist between different molecules and similar molecules are equal. Raoult’s law can also be applied to non-ideal solutions. However, this is done by incorporating several factors where we have to consider the ...
Moreover, while studies of phthalates have included diverse cohorts, race-ethnic specific differences between phthalate/phthalate replacements and obesity have not been previously reported. Viewing race and ethnicity as social constructs, the motivation for examining race-ethnic specific differences stems ...
examples are shown: ITLN1 (red), which agrees very well between the two methods and has a cosine value of 0.005; LIN28A (magenta), which is at the median cosine distance (0.03); and XNF7 (khaki), which shows the lowest level of agreement between the two methods (cosine distance 0.15...
The dissolution and depolymerization of hemicelluloses from corncob by the microwave-assisted HTP were assessed, the optimum microwave-assisted hydrolysis conditions were identified, and the relationship between the hydrolysate composition and the furfural yield was investigated....
The mass loss during dehydroxylation shows the number of moles of hydroxyl units is six. There is a linear relationship between the first dehydroxylation temperature and the electronegativity of the agardites (REE).doi:10.1016/j.tca.2004.09.007Ray L. Frost...
The transformation rate of moles (melanocytic nevi) into cutaneous melanoma: a population-based estimate. Arch Dermatol 2003; 139: 282–288. PubMed Google Scholar Gandini S, Sera F, Cattaruzza MS, Pasquini P, Abeni D, Boyle P et al. Meta-analysis of risk factors for cutaneous melanoma: ...