On Sep 23, 2005, at 5:12 PM, Byron A Jeff wrote:

>> it takes about 0.05 kg of fuel to boil a kg of water in an
>> unspecified amount of time.
>
>
> 0.05 kg of which fuel?
> Each delivers is different amount of energy per unit.
>
Not really.  All the hydrocarbons are approximately CH2(n) and
deliver significantly similar amounts of energy per gram.  Coal
(pure C, sorta), hydrogen (pure H) and more complex fuels (wood)
may be signficantly different, but they're not that common as "fuels"

BillW

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