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  • 1.
    Carbon - Wikipedia
  • Overview of the chemical element carbon, covering notable characteristics, applications, history, occurrence, precautions, and more.
  • http://en.wikipedia.org/wiki/Carbon
  • 2.
    carbon: Definition from Answers.com
  • carbon n. ( Symbol C ) A naturally abundant nonmetallic element that occurs in many inorganic and in all organic compounds, exists freely as
  • http://www.answers.com/topic/carbon
Questions/Answers
Carbon?????
How many bonds must form to make carbon stable ? (study guide question, cannot find the answer ANYWHERE)
Carbon has 4 bonds. This can be 4 single bonds, or 2 double bonds, or 1 single bond and 1 triple bond. You get the idea. You should be able to find this answer in the first chapter or two of any general chemistry book.
What happens to the 3 carbonatoms of a molecule of pyruvicacid that enters the Krebscycle?
A) The three carbon molecules are released in the form of carbon dioxide. B) One carbon is released in the form of carbon dioxide and two carbons are incorporated into a molecule of acetyl CoA. C) Two carbons are released in the form of carbon dioxide and one carbon is incorporated into a molecule of acetyl CoA. D) All three molecules of carbon are incorporated into molecules of acetyl CoA.
B).One carbon is released in the form of carbon dioxide and two carbons are incorporated into a molecule of acetyl CoA. The two carbons in acetyl CoA combine with oxaloacetate in the Cycle to form citrate.
How much carbon is recycledand stored in the livingbiosphere?
Is 90% of the carbon being used by living bodies, 9% in CO2 in the ocean/atmosphere and 1% of the carbon stored in dead stuff like fossel fuel? What is the ratio of these carbon stores?
No one really knows. There is lot of uncertainty in the carbon cycle. The UN has a graphic at: http://www.grida.no/climate/vi tal/13.htm You will need to calculate the ratios yourself. The key factoid to note is that the uncertainty in the intermediate and deep water reservoirs is 2,000 gigatonnes, and mankind's contribution to atmospheric CO2 is 5.5 gigatonnes per year. (Different sources have different numbers for the reservoirs and fluxes.) Mankind's contribution is so dwarfed by the uncertainties that making a case we are responsible for climate change .... is a bit of a stretch.
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