12-25-2012, 03:35 PM
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#6 (permalink)
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A True Z Fanatic
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Quote:
Originally Posted by SouthArk370Z
Thanks for the info.
While it is true that hydrocarbons (LPG/gasoline) follow the "denser = more energy" rule - Ethane, Methane, Propane, Butane, Gasoline are increasingly denser and have more BTU - EtOH is not a hydrocarbon. EtOH, while having less energy content (21.2 MJ/L vs 34.8 for gaso and 38.6 for diesel), is more dense (0.79 g/cm3 vs 0.71–0.77 for gasoline).
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I guess you're right on the density being higher of ethanol (an alcohol) than gasoline (a composite of several compounds lacking the relatively large amounts of oxygen present in ethanol).
So yeah, for hydrocarbons, heavier is more, not necessarily true for other compounds.
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