Methanol
Hydrogen
Octane (gasoline or petrol)
2007-06-21 09:11:04 · 7 answers · asked by Sweet_b-yatch 1 in Science & Mathematics ➔ Other - Science
The highest energy density by mass is Hydrogen, be it in liquid, compressed or uncompressed form. By volume it's gasoline.
2007-06-21 09:36:16 · answer #1 · answered by Erik Van Thienen 7 · 1⤊ 0⤋
By weight, hydrogen is the most powerful.
But, gasoline is more concentrated power. That is why it is used in cars. More bang in a given volume. Properly mixed with air, one gallon of gasoline has the power of 28 sticks of dynamite.
One kilogram of hydrogen will beat any of the others for power, but 1 kilogram of hydrogen would have to be compressed to dangerous pressures to reach the power density of gasoline. 1 kilogram of gasoline does not have to be compressed at all to be easily transported in a tank.
2007-06-21 10:45:45 · answer #2 · answered by Owl Eye 5 · 0⤊ 0⤋
The energy value in megajoules/kilogram of the fuels you mention are: Methanol 19.95, Hydrogen 120, Gasoline 42-44. Ethanol is 26.68 by the way,
so for the same volume Hydrogen has a much higher energy density.
2007-06-21 09:39:00 · answer #3 · answered by Mr. Potatohead 2 · 0⤊ 1⤋
Which ever one has the highest carbon content will produce the most energy.
2007-06-21 11:02:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋
On what basis - volume, mass, moles? If it is carried in a fuel tank, octane is the winner by a huge margin.
2007-06-21 09:17:17 · answer #5 · answered by Uncle Al 5 · 0⤊ 0⤋
Methanol: -1368 kJ mol-1
Hydrogen: -483.6kJ mol-1
Octane: -5508.9 mol-1
So, octane releases the most energy
Hope this helps, email me any questions
Ashley
2007-06-21 09:35:32 · answer #6 · answered by Ashley 5 · 0⤊ 0⤋
gasoline. give it a try :)
2007-06-21 09:18:38 · answer #7 · answered by kami_morris 2 · 0⤊ 1⤋