Amount of energy in coal more than wood?

Question

The question is suggest how you could tell that coal is a more concentrated store of chemical energy than wood is? Any help here please, thanks :)

Answer 1

coal is wood but it has been under the ground for ages and has more energy stored up in it because its been around longer.

Answer 2

coal  is the product of heat energy and hence more energy is transfered to it than the wood++++++++++++++++++++++++++++++++++++...

Answer 3

Coal is mostly carbon.

Answer 4

HI,

The coal contains more amount of energy than wood because the carbon density of coal is far more greater than that of wood.

Hope this helps. Keep smiling. Bye.

Answer 5

Simple use a calorimeter, suitably lagged, then burn them in it and measure differences. The science has been around for a long time.

Very sophisticated versions do it all the time for food

http://en.wikipedia.org/wiki/Calorimeter...