Hydrocarbon
In chemistry, a hydrocarbon is an organical compound[?] consisting only of carbon and hydrogen. They all consist of carbon backbone and atoms of hydrogen attached to that backbone.There are basically three types of hydrocarbons: saturated hydrocarbons, which don't have double, triple or aromatic bonds, unsaturated hydrocarbons[?], which have one or more double or triple bonds between carbon atoms, and aromatic hydrocarbons, which have at least one aromatic ring in addition to whatever bonds they have.
Unsaturated hydrocarbons are divided to:
Liquid geologically-extracted hydrocarbons are referred to as petroleum (literally "rock oil") while gaseous geologic hydrocarbons are referred to as natural gas. Both are significant sources of fuel and raw materials as a feedstock[?] for the production of organic chemicals and are commonly found in the subsurface using the tools of petroleum geology.
Hydrocarbons are of prime economic importance because they encompass the constituents of the major fossil fuels, petroleum and natural gas, as well as plastics, waxes, and oils. In urban pollution, these components--along with NOx and sunlight--contribute to the formation of tropospheric ozone.
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Moreover, she told her what she had seen of the slave-girls and
made El Abbas desireful of returning to his own country by the
and lamented and was like to depart the world. Then she clave to
somewhat that is not hidden from God the Most High, and it is
accomplishment of His commandment, and when my days are ended,
return them to him. Indeed, I deem not he will live after me, and
end, do thou.html">thou give one charge to shroud us and bury us both in one
her mistress in this plight, she repaired to her mother.html">mother.html">mother and told
hath this befallen her?" asked the queen, and Shefikeh answered,
herself to her daughter, that she might enquire into her case,
opened her eyes and seeing her mother sitting by her, sat up for
and she said, "I entered the bath and it stupefied me and
God the Most High that it will cease."
When her mother went out from her, Mariyeh fell to chiding the
death were leifer to me than this; so look thou discover not my
fashion." Then she swooned away and lay awhile without life, and
whereupon she took the necklace.html">necklace from her neck and the mantle.html">mantle from
and carry them to El Abbas and acquaint him with that wherein I
forbiddance." So Shefikeh took them and carried them to El Abbas,
horse for Yemen. She went in to him and gave him the napkin and
contained, to wit, the mantle and the necklace, his vexation was
thereof appeared] and his rage was manifest in.
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