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What Makes The Best Fuel?

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What Makes The Best Fuel? Results: Alcohol Mass Loss (g) Temp Rise �c Energy (J) Ethanol 0.39 11.5 12.846 Ethanol 0.45 11 10.266 Pentanol 0.26 13 21.000 Pentanol 0.21 11.5 23.000 Propanol 0.55 9 6.872 Propanol 0.42 11 11.006 Hexanol 0.27 10 15.555 Hexanol 0.29 11 15.931 Octanol 0.35 10.5 2.600 Octanol 0.34 11 13.588 Alcohol Temp Rise �c Mass Loss (g) Methanol 13 0.80 12 0.98 12.5 0.26 14 0.51 13 0.96 13 0.93 12 0.63 11 0.75 Ethanol 13 0.34 12 0.32 11 0.57 10.5 0.65 11.5 0.37 10.5 0.35 11.5 0.51 9 0.35 10 0.37 Propanol 10 ...read more.


11 0.35 10 0.34 9 0.16 9.5 0.16 13 0.30 14 0.32 13 0.31 13 0.32 10 0.39 10 0.33 Analysing: My graph doesnt really show a trend, I have a lot of anamalous results. The graph of the classes results shows a better trend, as more alcohols were tested, so results were more accurate. I also think I didn't obtain enough evidence to justify anything. The results should have been in a straight line, the energy should have increased as the amount of crabon atoms increases. ...read more.


Heat loss was the main problem during the experiment, it meant mass of the alcohol was lost, while not even being burned. Also I should have collected more data, this would have meant the average result could have been more accurate. Things I could have done to improve the experiment are: I could have stopped used more accurate thermometors, put a lid over the copper calorimeter, this would stop heat loss from the water. I could also have kept the lid on the alcohol more to stop evaporation of the alcohol, meaning the mass of the alcohol could be incorrect. ...read more.

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