File Name: physical and chemical properties of natural gas .zip
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Learning Objectives. Because alkanes have relatively predictable physical properties and undergo relatively few chemical reactions other than combustion, they serve as a basis of comparison for the properties of many other organic compound families. Because alkane molecules are nonpolar, they are insoluble in water, which is a polar solvent, but are soluble in nonpolar and slightly polar solvents. Consequently, alkanes themselves are commonly used as solvents for organic substances of low polarity, such as fats, oils, and waxes. Nearly all alkanes have densities less than 1. These properties explain why oil and grease do not mix with water but rather float on its surface. Natural gas is composed chiefly of methane, which has a density of about 0.
Jorge F. Methane gas hydrates in sediments have been studied by several investigators as a possible future energy resource. In situ dissociation of natural gas hydrate is necessary in order to commercially exploit the resource from the natural-gas-hydrate-bearing sediment. The presence of gas hydrates in sediments dramatically alters some of the normal physical properties of the sediment. These changes can be detected by field measurements and by down-hole logs. An understanding of the physical properties of hydrate-bearing sediments is necessary for interpretation of geophysical data collected in field settings, borehole, and slope stability analyses; reservoir simulation; and production models. This work reviews information available in literature related to the physical properties of sediments containing gas hydrates.
Jean Hein. The use of natural gas methane and propane as fuel gases exemplifies numerous areas of general science and general chemistry: intermolecular forces, states of matter and changes of state; heats of vaporization; liquid—vapour equilibrium and vapour pressure; stoichiometry and heats of combustion; gas laws; carbon dioxide emissions and climate change. The chemistry and technology of using these gases as fuels can be used to connect these topics to a practical context. This article presents some selected physical and chemical properties of the two fuels and some basics of fuel gas use, working from the gas source or cylinder, to the gas supply pressure regulator, then to the burners. This material offers a variety of relevant applications along with ideas for interesting test questions.
In contrast, calcium and magnesium are the fifth and sixth most abundant elements on Earth, respectively; they are found in huge deposits of limestone and other minerals. Here is the pdf file for this color periodic table so you can save and print it. Based on the work of physicist Henry Moseley, the periodic table was reorganized on the basis of increasing atomic number rather than on atomic weight. Fluorine is also found in Teflon coatings on kitchen utensils. Such species are called isotopes.
PDF | The actual composition of natural gas depends primarily on the In fact, the chemical composition of available natural gas (at the.
Natural gas is a hydrocarbon mixture consisting primarily of saturated light paraffins such as methane and ethane , both of which are gaseous under atmospheric conditions. The mixture also may contain other hydrocarbons, such as propane , butane , pentane, and hexane. In natural gas reservoirs even the heavier hydrocarbons occur for the most part in gaseous form because of the higher pressures.
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Natural gas also called fossil gas ; sometimes just gas , is a naturally occurring hydrocarbon gas mixture consisting primarily of methane , but commonly including varying amounts of other higher alkanes , and sometimes a small percentage of carbon dioxide , nitrogen , hydrogen sulfide , or helium.