Oh, dear! I must have a touch of dyslexia.
Either that, or I type too fast.
Anyways, the correct bond-energy value for C=O is 781KJoules, not 8.71KJoules.
Even slipped a decimal-point in by mistake.
Hah!
Don't ask me to do an "Enthalpy of Formation" equation [Hf], it would take up too many mind-numbing lines, and it would only show more tons of coal required.
"it makes a grown man cry..."
Jake