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Heat of Combustion Aim: The aim of the experiment is the find the heat of combustion of water. Hypothesis: The heat of the combustion for water will be 6510.77 J This is hypothesised by using the following equation: Heat in joules = grams water heated x temp rise (°C) x 4.2J/g°C. Theory: The heat of combustion of a substance is the heat liberated when one mole of the substance undergoes complete combustion with oxygen at a constant pressure of one atmosphere with the final products being carbon dioxide gas and liquid water. The heat of combustion is minus the enthalpy change for the combustion process, because ?H is defined as the heat gained. Combustion is burning, because a fuel combines with an oxidant (usually O2) and a sustained chemical reaction proceeds at a temperature above that of the surroundings or an oxidation process in which at least one reactant is gas and which produces energy in the form...

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