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    retardancy of polymers. The combustion of a polymer can be classified as an exothermic oxidation reaction. The reaction starts when the polymer is heated to its initiation temperature or when the chemical bonds begin to cleave. As a result, the polymer begins to give off volatile gases (reducers), which mixes with atmospheric oxygen (oxidizer). When this fuel mixture either reaches their autoignition temperature or are exposed to an external source of energy, they undergo combustion or the oxidation reaction

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    Enthalpy of Combustion of Alcohols Procedure 1. Put 150³ of cold water in an aluminium calorimeter and record its temperature. 2. Support the calorimeter over a spirit burner containing the ethanol you are going to burn. Arrange a suitable draft exclusion system to reduce heat loss. 3. Weigh the burner and Alcohol. 4. Replace the burner under the calorimeter and light the wick. 5. Stir the water with a thermometer. 6. When the water temperature has risen by between 15 and

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    An Investigation into the Enthalpies of the Combustion of Alcohols ================================================================== Planning My aim for this experiment is to see the energy produced from different alcohols. This investigation involves burning alcohol in the air. ‘GCSE Chemistry’ by B.Earl and L.D.R Wilford says that "alcohols form, another homologous series, with the general formula Cn H2n+1OH ". The alcohol reacts with the oxygen in the air to form the products water

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    Changes of Combustion of Different Alcohols Aim: The aim of this experiment is to find out how the enthalpy change (total energy released when the alcohols are completely combusted in a plentiful supply of air) for 5 different alcohols is affected by the number of carbon atoms in the alcohol and other factors contributing to the molecular structure. Prediction: I predict that as the amount of carbon atoms in the alcohol increases, the higher the enthalpy of combustion will be. I

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    The Internal Combustion Engine

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    The internal combustion engine has become an integral part of the lives of every person on earth. They’re the devices that have allowed us to cross continents reliably, generate electricity in remote areas and fly around the world in a matter of hours. All these engines do is burn fuel and convert its energy into work. It’s these heat engines that have really changed the world. However the convenience they bring has come at a great cost. The major problem with the internal combustion engine is the

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    Spontaneous Human Combustion Paranormal proponents and popular articles are quick to attribute certain dramatic fire-death characteristics to an unknown or bizarre power source, but in all such deaths documented in forensic literature, there has been no need to resort to bizarre interpretations to account for the observed facts. Forensic scientists very rarely, if ever, mention the (alleged) phenomenon of spontaneous human combustion (SHC). After reading an article on the subject in BILD

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    Alcohols : An investigation into the heat of combustion of five alcohols Planning ======== Introduction ------------ I am trying to determine the heat of combustion for the first five alcohols, which are; ethanol, propanol, butanol, pentanol and hexanol. I am trying to determine whether the amount of Carbon atoms on the molecule affects the heat energy given out by the molecule when burned. I believe that as the size of the molecule increases and the chain of carbons grows longer, then the heat

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    in enthalpy for the combustion of magnesium metal Abstract ======== Hess’s law of heat summation states that the value of DH for a reaction is the same whether it occurs directly or as a series of steps. This principle was used to determine the change in enthalpy for a highly exothermic reaction, the combustion of magnesium metal. Enthalpy changes for the reactions of Mg in HCl (aq) and MgO (s) in HCl (aq) were determined experimentally, then added to that for the combustion of hydrogen gas to

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    For as yet scientifically unknown reasons, times occur when an unsuspecting person can just burst into flames and be incinerated. This is referred to in the scientific world as Spontaneous Human Combustion or SHC. There are many documented cases throughout history. The earliest cases go as far back as the early 16th century. Then there are the ones that are as recent as 1998 but have no better explanation of what happen then the ones in the 16th century did. There are truly only two types of cases:

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    Internal Combustion Engines An internal-combustion engine is a heat engine that burns fuel and air inside a combustion chamber located within the engine proper. Simply stated, a heat engine is an engine that converts heat energy to mechanical energy. The internal- combustion engine should be distinguished from the external- combustion engine, for example, the steam engine and the Stirling engine, which burns fuel outside the prime mover, that is, the device that actually produces mechanical

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