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In response to:

Obama's Gas-Powered War on Coal

mgaona Wrote: May 12, 2012 12:51 PM
It all depends on the chemical composition of the given fuel and the bounds between its atoms within the molecule. Natural gas High Heating Value is about 23 BTU/lb, while coal (Anthracite) is about 14 BTU/lb, thus, you will need more carbon when burning coal to render a certain amount of heat (that will be converted into electric energy) compared to natural gas. After combustion, coal turns into CO2 only, while natural gas becomes CO2 + H2O, considering full oxidations in both cases.
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