03/17/2014

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The Result But, although the undeniable utility, the combustion reactions are responsible for one of the biggest ambient problems of the planet: the atmospheric pollution. The derivatives of the oil, substances called hydro-carbons that are formed by atoms of carbon and hydrogen, are the generators of pollutants. What it is a chemical reaction? A chemical reaction is a transformation of the substance in which changes in the composition occur reacting chemistry of one or more substances, resulting in one or more products. When occurring a chemical reaction always will have an energy variation. what it is energy? The energy is defined as capacity to carry through work or as the result of the accomplishment of a work, if it has energy has heat. Therefore the heat is an energy form that if transfers of a point to another one whenever it has differences of temperature between them. In general, the result of the heat flows is the increase of temperature of the body that receives heat and the reduction of temperature of the body that yields heat. In function of the involved heat in a chemical reaction we can classify them in: Endothermic: They absorb energy in the heat form (ENDO = for inside)? Exotrmicas: They liberate energy in the form of heat (EXO = for are) In the Combustion or burning occurs a exotrmica chemical reaction between a substance (the fuel) and a gas (the supporter of combustion), generally the oxygen, to liberate heat. In a combustion complete, a fuel reacts with a supporter of combustion, and as resulted if it gets resultant composites of the union of both, beyond energy, being that some of these composites are the main .causing agents of the atmospheric pollution. In the combustion of the hydro-carbons (CO2) occurs to the carbonic gas formation and water,...
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Sporadic And thus many begin to cross a way never thought, the robbery. They begin with small familiar thefts, some clothes, utensils of the old man, adduce that they robbed bici to them they sold and it by two currencies; until this stops reaching and the hand begins to put itself more and more complicated. The great ones offer some old iron to them and " trabajito" of test, if it goes to them well has of " buena" and if no, they propose another one to you " laburito" more tranqui, until they are hooked to such point that will not be able to leave. This modality is the classic one in marginal atmospheres, in permanent growth. There are and them in other scopes of the society, that seemingly have everything and nevertheless something they are needing, here also begin to journey the way of the consumption. In all the cases, the exit is a difficult, safe task in which by own decision they recognize that they do not have alternative and they resort to attention centers. To all it does not stick the consumption in the same way to them, are those that consume while they read a book or those need that it to face an adverse situation, and nevertheless do not fall in the claws of the daily consumption, but of the sporadic use. But the experience says to me that many of which they enter this world, arriving at limits to lose their freedom, do not have anything of where to take hold itself, they are than single more in his pain. And these are the majority. They grow and they will continue growing, because there is nothing fills his lives, do not have access to share nothing with anybody they marginalize because them, do not...