of the gases. The molecular weights of substances that are not normally gaseous and do not evaporate without decomposition are sometimes determined from their effects on the melting point, boiling point, vapor pressure, or osmotic pressure of some solvent (seecolligative properties). However, if ...
spectrometry principally provides detailed information of the hydrocarbon types, the formulae, and the concentration of all the components in a fraction. Generally, hydrocarbon derivatives oflow molecular weight, e.g., methane, ethane, and propane, are gases; those of intermediate molecular weight, ...
In addition to the common gaseous products such as CO, CO2, CH4, C2H6 and C3H8, a large number of gaseous products with relatively high molecular weight could also be generated during coal spontaneous combustion. To investigate the evolution of higher molecular weight (HMW) gases during coal ...
Involving velocity, pressure, density and temperature as functions of space and time. Gases and Compressed Air Properties of air, LNG, LPG and other common gases. Pipeline capacities and sizing of relief valves. Material Properties Properties of gases, fluids and solids. Densities, specific ...
18、Also, because themolecularmotion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape.(此外,由于气体的分子运动依赖于温度,在木星行星的低温下,即使是最轻的气体也不可能获得逃逸所需的速度。) ...
Any suitable gas may be tested, including the so-called inert gases of Group 0 of the Periodic Table; the normally gaseous elements of Group 7a; common gases like hydrogen, nitrogen, oxygen, and air; the various normally gaseous oxides of nitrogen and sulfur; normally gaseous hydrocarbons and...
1.9.3.1 Apparent Molecular Weight Apparent molecular weight for gases is mathematically defined as follows: MWa=∑yiMWi where MWa is apparent molecular weight of mixture, yi is mole fraction of component I, and MWi is molecular weight of component i. View chapterExplore book Reservoir-Fluid Proper...
Generally, hydrocarbon derivatives of low molecular weight, e.g., methane, ethane, and propane, are gases; those of intermediate molecular weight, e.g., hexane, heptane, and octane, are liquids; and those of high molecular weight, e.g., eicosane (C20H42) and polyethylene, are solids. ...
Property that indicates how readily gases, liquids and other materials can penetrate an object. MIDDLE LAMELLA The thin layer that connects two plant cells and is rich in pectin. MATRIX POLYSACCHARIDES Complex polysaccharides found in the space between cellulose microfibrils. They are traditionally div...