1. Consider coal (-CH-) (- ind

1. Consider coal (-CH-) (- indicates an aromatic carbon-carbonbond and the average aromatic bond energy is 519 kJ/mol) andcellulose or biomass (-CHOH-) as fuel.

Which is more economic (more energy per gram), coal or biomass?Which is environmentally more valuable (less CO2)?


Which is more economic (more energy per gram), coal orbiomass?

The Coal have more energy then biomass.

The fossil fuels produce great energy and are used in all typesof manufacturing as well as everyday life. Things such as gasoline,electricity, natural gas and many others are derived from thissource. The fact that they are rapidly becoming depleted and arenon-renewable, as well as putting dangerous emissions into the air,has become a concern of governments worldwide.Biomass is alsocomposed of organic matter. However, it has not laid around formillions of years to become part of the earth’s structure. It isnatural products such as trees, plants, wood waste and other suchthings. Manure of certain animals is also included in this mix.Thechemistry of biomass is not difficult to understand. It receivesits energy from the sun that mixes with the plants naturalchemistry to form solar energy. The conversion process involvescarbon, hydrogen and oxygen within the plant structure. This isstored and can be converted into commercial energy use.With thethreat of global warming and studies showing that carbon emissioninto the air is harmful to the human body, a great deal of interestis being concentrated on biomass as a major energy source. It isclean, only releases natural elements into the air so is notharmful to the atmosphere or humans.

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