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= 1211 kJ mol-1. Therefore the molar heat of combustion of ethanol is 1211 kJ mol-1 (The molar enthalpy of combustion of ethanol is 1211 kJ mol-1). (Note that the enthalpy change for the reaction is negative because the reaction is exothermic, so the enthalpy change for the reaction is -1211 kJ mol-1, ÎH = - 1211 kJ mol-1)
Its mass density is about 1750 kg/m 3. The molar mass of the combustion gases is about 34,75 gram/mol and the combustion temperature is about 2600 K. Regression rate is about 9 mm/s @ 1 MPa and increases with 9 mm/s/MPa. A disadvantage of black powder is that it produces over half its weight of solid residue.