the mole was interpreted as that number of particles whose total mass in grams was numerically equivalent to the atomic or molecular weight in atomic mass units, referred to as gram-atomic or gram-molecular weight. This is how the above value forNAwas calculated. As the ability to make measur...
molecular weight- (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule relative molecular mass mass- the property of a body that causes it to have weight in a gravitational field chemical science,chemistry- the science of matter; the branch of the natural ...
2.2.2 Molecular weight As the skin is a dense membrane and tough to penetrate, drug molecules must also have a small molecular weight to permit their skin absorption via passive diffusion. Smaller molecules are consequently likely to diffuse through the skin at greater rates than larger molecules...
Molecular Weight The molecular weight of a polymer is of prime importance in the polymer’s synthesis and application. Chemists usually use the term molecular weight to describe the size of a molecule. The more accurate term is molar mass, usually in units of g mol-1. The interesting and ...
if the molecular weight of a substance represents the number of grams required for 1 mole, then the number of moles represented by any given amount of substance will be equal to the grams of that substance divided by its molecular weight. Mathematically, this is represented by moles = grams ...
: the mass of one mole of a compound equal in grams to the molecular weight called also gram-molecule Word History First Known Use circa 1902, in the meaning defined above Time Traveler The first known use of gram molecular weight was circa 1902 See more words from the same year ...
Molecular weight, mass of a molecule of a substance, based on 12 as the atomic weight of carbon-12. It is calculated in practice by summing the atomic weights of the atoms making up the substance’s molecular formula. The molecular weight of a hydrogen m
Attempts to dissociate this active enzyme complex to smaller size by increasing the detergent concentration led to inactivation. Thus, the smallest active particle in the presence of Lubrol WX contains the two polypeptide subunits in a mole ratio of 2:4 under conditions where the micellar form of...
ultra-high molecular weight polyethylene超高分子量聚乙烯 molecular diffusion分子扩散 molecular formulan. 分子式 molecular interaction分子间相互作用 molecular ratio分子比率 molecular词源中文解释 “分子的,由分子组成的”,1815年开始使用,源于 molecule 和 -ar 的组合,或者来自法语的 moléculaire 或现代拉丁语的...
Molecular‐Weight Determinations and Stoichiometric Measurements of 40‐S and 60‐S Ribosomal Proteins of the Cellular Slime Mold Dictyostelium discoideum The stoichiometry of ribosomal proteins of the cellular slime mold Dictyostelium discoideum was investigated. The average number of copies per mole ribosom...