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Transcribed image text: Table 1.13 Heats of combustion of selected fuels at 25C (298 K) c.air c, ox (kJ/mol) (kJ/g)(kJ/g(air)(kJ/g(O2)) 17.69 12.54 11.21 14.74 15.73 12.80 Carbon monoxide Methane Ethane Ethene Ethyne Propane n-Butane n-Pentane 0.10 50.00 47.45 50.35 48.20 46.45 45.69 45.27 44.77 43.81 40.00 19.83 26.78 30.79 CH4 C2H6 C2H4 1423 2.96 1253 2044 2650 3259 5104 3680 3120 635 1232 1786 2772 3.65 2.97 2.97 2.97 2.97 2.97 3.03 3.07 2.99 C3Hg 10 12 12.80 ne c-Hexane Benzene Methanol Ethanol Acetone D-Glucose Cellulose Polyethylene Polypropylene Polystyrene Polyvinylchloride Polymethylmethacrylate Polyacrylonitrile Polyoxymethylene Polyethyleneterephthalate Polycarbonate 12.80 13.06 13.22 12.88 14.00 13.27 13.59 12.65 12.66 12.97 12.84 12.98 13.61 14.50 13.21 13.12 12.67 12 CH3OH C2HsOH (CH3)2CO C&H1206 3.08 16.09 43.28 43.31 39.85 16.43 24.89 30.80 15.46 22.00 29.72 29.58 2.93 2.94 2.98 3.36 on 2.94 Table 1.14 Standard heats of formation of some common gases Compound Formula 98(kJ/mol) Water (vapour) Carbon monoxide Carbon dioxide Methane Propane Ethene Propene Ethyne H20 CO CO2 CH4 241.826 10.523 393.513 74.75 C2H4 C3H6 C2H2 103.6 +52.6 +20.7 +226.9 4 Calculate the adiabatic flame temperatures for the following mixtures initially at 25 C: (a) stoichiometric butane-oxygen mixture

Every stage of the production of a cigarette has negative effects on the environment and the people who are involved in manufacturing tobacco products, even before the health of smokers and non-smokers is affected

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