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Isooctane is an organic compound that is used in gasoline powered internal combustion engines. When it burns, it gives off heat. The heat makes gas expand and that pushes pistons down which makes the crankshaft turn. That makes the car move. Isooctane does not cause a gasoline engine to knock, which means it does not cause the gas-air mixture in a cylinder to burn before the spark plug ignites it. When an engine knocks, the mixture ignites in several places inside a cylinder and makes a knocking sound. Another chemical, heptane, causes an engine to knock. A mixture of octane and heptane is compared to another fuel to determine the octane rating of the other fuel. If the mixture is 90% octane (actually isooctane) and 10% heptane, then the fuel has an octane rating of 90. It is possible for a chemical to have an octane rating of over 100. In that case, the chemical is mixed with heptane until the percent is equal to 100% octane when the engine starts to knock. Then extrapolation is used.
An engine with a 4:1 compression ratio can use a very low octane gasoline. An engine with an 8:1 compression ratio needs a high octane gasoline. An engine with a 12:1 compression ratio needs close to 100 octane.
During World War 2, America went over to 100 octane gasoline and higher compression ratios. then its fighter aircraft became faster than German fighters.
What else can I help you with?
What most likely accounts for the difference between curved a and curve b on the energy diagram?
The reaction described by curve B is occurring with a catalyst.
What most likely accounts for the difference between curve A and curve B on the energy diagram?
The difference between curve A and curve B on an energy diagram is most likely due to the activation energy required for the reaction. Curve A likely represents a reaction with a higher activation energy, resulting in a slower reaction rate compared to curve B, which represents a reaction with a lower activation energy and a faster reaction rate.
What is the most common nuclear energy used?
The most common form of nuclear energy used is nuclear fission, where the nucleus of an atom is split to release energy. This process is primarily used in nuclear power plants to generate electricity through the controlled chain reaction of uranium or plutonium isotopes.
What nuclear reaction combines gas to form helium and produce most of the suns energy?
The nuclear reaction that combines hydrogen to form helium and produces most of the sun's energy is called nuclear fusion. In this reaction, hydrogen nuclei (protons) fuse together to form helium nuclei, releasing a large amount of energy in the form of light and heat.
What does activation energy have to do with temperature?
In most cases, it is thermal energy which activates chemical reactions. In the most easily observed example, we ignite a flammable substance by heating it to its ignition temperature (in the case of paper, 451oF). The hotter something is, the more thermal energy is available to activate a reaction.
Most of the energy in an isoctane reaction is released in the form of what?
During burning the energy is released by heat.
Most of the energy in an iso-octane reaction is released in what form or forms?
Heat and light (:
A chemical reaction that gives off heat is most likely to be what?
An endothermic reaction is one that consumes heat.
A chemical reaction that transfers energy from the reactants to the surroundings is reffered to as?
A chemical reaction that transfers energy from the reactants to the surroundings is referred to as an exothermic reaction. A reaction that takes energy in is endothermic.
In a chemical reaction what does it take energy to do?
For most chemical reactions, energy is required to supply an "activation energy" required before reaction.
Can energy be released during chemical reaction can it be absorbed can chemical reaction take place in which energy is neither absorbed or released?
The simple ANSWER IS yes!!! The reaction that does this is referred to as 'Exothermic'. Energy can be absorbed during a chemical reacton, but it needs an activation energy to start the reaction. For all chemical reactions there is always a change of energy. No reaction is ever 'energy less'. However, the exchange of energy can be very small. Example of an exothermic reaction is sulphuric acid and sodium hydroxide. if you hold the beaker the two reactants are in , it will feel warm. This is an exothertmic reaction. For the thermal decomposition of calcium carbonate, you have to heat it up; you are driving energy in, so it is an endothermic reaction. Other endo thermic reactions, may feel cold, they are absorbing heat at ambient room temperature.
What type of reaction supplies the most energy?
fusion nuclear reaction followed by fission nuclear reaction
What type of energy does breaking bonds release?
Breaking bonds releases potential energy stored in the chemical bonds. This potential energy can be released as kinetic energy or in the form of heat depending on the reaction.
What energy may be released and absorbed during a chemical reaction?
With the firm knowledge that most chemical reactions take place within the armpit, we know that the aliginds folicules release energy during these processes which cause bodily odour better know in latin as stinkas octimas. If the armpits fail at this scientific process the bumhole will assist in the releasing of the 'stinkas octimas'.
What most likely accounts for the difference between curved a and curve b on the energy diagram?
The reaction described by curve B is occurring with a catalyst.
Chemical energy in fossil fuel is most often released by what process?
Chemical energy in fossil fuels is most often released through combustion, which involves the rapid reaction of the fossil fuel with oxygen in the air to produce heat, light, and various byproducts such as carbon dioxide and water.
What most likely accounts for the difference between curve A and curve B on the energy diagram?
The difference between curve A and curve B on an energy diagram is most likely due to the activation energy required for the reaction. Curve A likely represents a reaction with a higher activation energy, resulting in a slower reaction rate compared to curve B, which represents a reaction with a lower activation energy and a faster reaction rate.
