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Adam El Shafei 10B 2/1/2004 Chemistry Practice Coursework Aim: My aim is to find out which fuel releases the most energy per gram measured by heating water. Scientific Theory: In this investigation I will be burning alcohols to heat up a beaker of water. I will be using five fuels: methanol, ethanol, propanol, butanol and hexane. These five fuels are members of the alcohol family. The alcohol molecules have a "backbone" of carbon atoms. Alcohols have a general formula C H OH. Alcohols are derived from an alkane by removing an -H and adding an -OH. Their carbon atoms are surrounded by hydrogen atoms. These fuels react with oxygen in the air to form water and carbon dioxide. The reaction that is involved in burning alcohols is exothermic because heat is given out. This means that the reactant energy is higher than that of the product. Heat energy is transferred from the flame...

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