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Effects of Depression
FDRs New Deal increased the role of government in peoples lives to unprecedented levels, levels that continued long after America had recovered from the Great Depression. These include: eating healthful foods and staying active, which stimulates..
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Law of Gravitation
Thinking Proportionally About Newton's Equation, the proportionalities expressed by Newton's universal law of gravitation are represented graphically by the following illustration. Making it more negative). However, a mere change of 40 000 feet further from the..
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Smokers v nonsmokers in todays

The largest study of the impact of smoking on the probability of developing cancer is the Cancer Prevention Study 2, which was funded by the American Cancer society. He would sit there with his hands


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A History of Sparta 950 - 192

APA, mLA, chicago, a History of Sparta 950-192. Kraay (self published Lexington, KY, 2008. Register, a History of Sparta, 950-192. People who bought this also bought. Classical History / Classical Civilisation, social Cultural Anthropology 18 off


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Jackson Pollocks Drip Paintings

Jackson Pollock: Key Interviews, Articles and Reviews. Blue Poles was purchased by the National Gallery of Australia in 1973 for.3 million, a then world record for a contemporary American painting. In response to this pressure, along


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Rates of Reaction


rates of Reaction

atoms or ions (electrically charged particles) combine occur very rapidly, while those in which covalent bonds (bonds in which atoms share electrons ) are broken are much slower. By chewing your food you increase the surface area so that digestion can go faster. When the petrol air mixture has been compressed, a spark from the plug ignites the mixture. If one of the reactants is a solid, the surface area of the solid will affect how fast the reaction goes. Usually reactions speed up with increasing temperature 100C rise doubles rate. Adding extra catalyst will make absolutely no difference. It is not enough in a petrol engine to produce combustion, so petrol engines need a spark plug. You should already know that the atoms or molecules in a gas are very spread out. You should have come across the idea in your biology lessons. So the larger the surface area of the solid, the faster the reaction will. This is because once the reaction has started, heat is produced and this will make it go even faster.

Reaction rate - Wikipedia



rates of Reaction

Rates of Reaction
rates of Reaction

In some cases the addition of a substance that is not itself a reactant, called a catalyst, accelerates a reaction. This is collision theory again. This is collision theory. This is "Bread and Butter Theory". In a diesel engine, compressing the gaseous mixture of air and diesel also increases the temperature enough to produce combustion. The rate of a reaction can be measured by the rate at which a reactant reactant : Substances present at the start of a chemical reaction is used up, or the rate at which a product product : A product is a substance formed. How do catalysts affect the rate of a reaction?

What factors affect the rate of a reaction? On the surface of the solid. A catalyst speeds up a reaction, an inhibitor slows it down.


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