Asked by Andy Blackwell in Uncategorized
What is organic theory?
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Asked in Environmental Issues, Population
Is Malthusian theory on population correct why?
The Malthusian theory is correct because the prosperity of humans depend upon the resources available in this world. Suppose there is some organic content that makes some percentage of earth's mass. And suppose that humans and other living things are formed of that organic content. And further suppose that humans need that organic content to survive i.e. humans consume that organic content. Now more the humans born, more is the requirement for that organic content and lesser will be the amount of that organic content. Hence no absolute prosperity. That proves the Malthusian theory.
Asked in Fossil Fuels, Telescopes
Which is leading theory for the formation of fossil fuels?
Asked in Fossil Fuels
Which is the leading theory for the formation of fossil fuels?
Asked in Biology, Learning Theories, Genetics
What concepts make a unified theory of biological structures possible?
Asked in Organic Chemistry, Alchemy (the practice)
Why vital force theory is finally discarded?
How does spontaneous generation differ from the scientific theory of biogenesis?
The long discredited theory of spontaneous generation claimed that garbage, or organic matter in general, would spontaneously give rise to vermin such as flies and mice. The scientific theory is that vermin are species which reproduce, and while they may make use of garbage or organic matter as food, they do not magically appear out of those things.
Is oil an organic substance or inorganic substance?
The generally accepted consensus is that oil is organic. This, however, is only a theory. An opposing theory is that oil's origin is abiotic. According to this theory, oil is an inorganic substance created deep in the mantle, and is much more plentiful than we believe. Some scientists say both theories are correct and that there are two different kinds of oil.
According to the cell theory can we synthesize a cell in the laboratory from organic molecules?
Asked in Chemistry
How is vital force theory?
Vital Force Theory is a theory made by the Scientist Berzelius in 1809 which assumed that organic compounds are only formed in living cells and it is impossible to prepare them in laboratories .. But the German Scientist Friedrich Wöhler Destroyed this theory when he prepared the organic compound Urea by heating the aqueous solution of 2 inorganic compounds which are Ammonium Chloride (NH4Cno) and pottasium Cyanate (kCNO). kCNO + NH4Cno ___> AgCl + NH4CNO NH4CNO __________> (Urea) (By Heating) Any More Info?
Asked in Evolution
What statement is true of Oparin and Haldane's theory?
Asked in Earth Sciences
What is a leading theory for the formation of fossil fuels?
Define Vital Force Theory?
Vital Force Theory is a theory made by the Swedish chemist BERZELLIUS in 1815, who put forward this theory that, organic compounds could be produced only under the influence of some mysterious force existing in living organisms. This mysterious force was called vital force. Since such mysterious force cannot be created artificially, it is impossible to synthesize organic compounds in the laboratory. This theory resigned supreme for a number of years. It gave serious set back to progress of organic chemistry. So, chemistry could not flourish for a long time. FAILURE OF VITAL FORCE THEORY: Vital force theory has been failed because a number of organic compounds can be prepared by inorganic or non-living stuff. FREDRICK WHOLER, a German chemist was the first person who, in 1828 synthesized an organic substance UREA by using inorganic substances. It was previously obtained from urine of animals. He obtained urea while evaporating an aqueous solution of Ammonium Cyanate (obtained by double decomposition of ammonium chloride and potassium cyanate) on boiling with water. (Both of the following reactions are carried out in the presence of heat) NH4Cl (s) + KCNO (s) ----------> NH4CNO (s) + KCl (s) NH4CNO (s) ------------> H2N-CO-NH2 (s) Urea (H2N-CO-NH2) This synthesis gave death blow to Vital Force Theory, thereafter thousands and thousands of organic compounds have been synthesized in the laboratory. With the down fall of Vital Force Theory, the term organic (pertaining to life) lost its original significance. However, it was shown that all organic compounds, whether natural or synthetic, essentially contain carbon and hydrogen and occasionally a few other elements such as oxygen, nitrogen, sulphur phosphorous and halogens. Organic compounds are now known as the compounds of carbon. Along with carbon, hydrogen and oxygen are also usually found, whereas nitrogen, the halogens, phosphorous and sulphur are sometimes present. The branch of chemistry which deals with the study of organic compounds is called organic chemistry.