How does coal produce energy?
2007-01-31 02:30:16 · 5 answers · asked by Anonymous in Environment
When coal burns in oxygen it changes to CO2 and water. The energy stored in CO2 and H2O molecules (in their chemical bonds) is lower than the energy stored in bonds in oxygen molecules and in coal itself. The difference in this energy is released when the burning takes place.
Energy liberated = (Energy in O2 + energy in coal) - (energy in CO2 + energy in H2O)
2007-01-31 02:41:37 · answer #1 · answered by hyd 2 · 0⤊ 0⤋
Coal burns, it generates heat.
With this heat, electricity plants heat water and it generates vapour.
This vapour moves a dynamo that produces electricity.
Coal machines vapour dont move a dynamo but other motion devices dpending on each particular machine
2007-01-31 02:37:24 · answer #2 · answered by carmenl_87 3 · 0⤊ 0⤋
Just like all the fossil fuels and Mother nature has built in a recycle system. Where do u think all the original fossil fuels Come from.
2007-01-31 04:45:20 · answer #3 · answered by JOHNNIE B 7 · 0⤊ 0⤋
carmenl_87 is completely correct. There's your answer
2007-01-31 02:39:23 · answer #4 · answered by BIGDAWG 4 · 0⤊ 0⤋
You set it on fire. It burns.
2007-01-31 02:37:28 · answer #5 · answered by jen 4 · 0⤊ 0⤋