I wrote:
> No common chemical and very few exotic chemicals can produce more energy > than gasoline . . . > By volume or by weight, as far as I know. Gasoline produces ~45 MJ/kg according to most sources. Wikipedia, which is sometimes good for something, says methane produces 50 MJ/kg. See: http://en.wikipedia.org/wiki/Heat_of_combustion I did not include "hydrogen" among common chemicals. As far as I know it is the most energy dense chemical fuel by weight, at 142 MJ/kg. That's why they use it for rocket fuel. In my book, in chapter 1, p. 12, I discussed this issue by comparing a hypothetical cell filled with hydrogen and oxygen to a cold fusion cell. I was assuming that hydrogen and oxygen has more energy by weight than any other chemical fuel. I am ignoring the weight of the container, and problems with compressing the gas, and all other real-world considerations. - Jed
