2)Gasmoleculesareinconstant,rapidmotion.Themovementofgasmoleculescausescollisionswiththewallsoftheircontainer,givingrisetogaspressure.3)Thespeedwithwhichgasmoleculesmovedependsupontheirtemperature.Agasconfinedinarigidcontainerexerts(施加,发挥,用(力))more施加,施加发挥,力pressureasthetemperaturegoesupbecauseitsmolecules...
Kinetic molecular motion continuously exchanges solutemoleculesbetween the two phases. If, for a particular solute, the distribution favours the moving fluid, the molecules will spend most of their time migrating with the stream and will be transported away from other species whose molecules are retain...
Gas hydrates are ice-like solid compounds in which gas molecules are sheathed in cages and are formed by hydrogen-bonded water (H2O) molecules and stabilized by van der Waals forces1,2. Usually, at high pressure and low-temperature conditions, these non-stoichiometric compounds are developed. Me...
Monte Carlo simulations are reported on the sorption and motion of small gas molecules (CH4 and CO2) in poly(octadecyl acrylate), a typical comb-like polymer with biphasic structure. Calculations were performed using a computational procedure recently developed by us, which is suitable to simulate ...
(Supplementary Fig.1). WhenHis comparable with the diameter of gas molecules, the effective height at the channel entry also depends on the size and incident angle of gas molecules24. The height of the slit-channel is in the range from 2 nm to 20 nm. Argon was chosen to model the...
The Brownian motion of a hard spherical particle in a gas whose molecules interact only with the particle but not with each other is considered from three points of view. (a) The generalized Fokker‐Planck equation for the process is derived by the classical method of Lord Rayleigh. (b) The...
Multilayer Ti3C2Tx MXenes are not stable in an ambient environment with water and oxygen molecules; however, they are stable in dry air and oxygen-free degassed water. Consequently, it is highly recommended to store Ti3C2Tx MXene colloids at low temperatures in refrigerators and in dark environ...
Diffusion is the statistical movement of molecules from a region of higher to one of lower concentration produced by the random thermal motion of the molecules. Diffusion can be considered a mixing process in which a particular molecular species moves under its concentration gradient independent of ot...
The colour of the Great Red Spot has been attributed to the presence of complex organic molecules, redphosphorus, or yet another sulfurcompound. Laboratory experiments support these ideas, but there are counterarguments in each case. Dark regions occur near the heads of white plume clouds near th...
Gas permeation is a complex physical and chemical process that includes absorption, disassociation, diffusion, recombination, and desorption of gas molecules, which is similar to the material outgassing process. Thus there has been no unified theory of gas permeation. Most scholars believe that diffusio...