excess moles (reacting with HCl) of NaOH = 0.0287 x 1.86 =0.0533 mol.pdf

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excess moles (reacting with HCl) of NaOH = 0.0287 x 1.86 =0.0533 mol the moles of NaOH reacting with carboxylic acid = 0.1135 -0.0533 = 0.0602 mol Solution excess moles (reacting with HCl) of NaOH = 0.0287 x 1.86 =0.0533 mol the moles of NaOH reacting with carboxylic acid = 0.1135 -0.0533 = 0.0602 mol.

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fluorene is mobile phase and fluorenone is stationary phase because : Mostly,it depends on the solvent you are using, but lets assume you use pentane as the solvent for fluorene and diethyl ether as the solvent for fluorenone. Used in this order, fluorene should actaully move slower down the column due to the the polarity of the alumina and the nonpolarity of the solvent (pentane). Since fluorene is less polar so, remember the rule like dissolves like? Well, this kind of applies to chromatography wherein rather than dissolve just replace it with moves with, so like moves with like. That being said the pentane will \"carry\" the fluorene through the alumina slower than the latter (which I will explain). Fluorenone is polar because of its C=O bond, that being said the dielectric constant of diethyl ether is 4.3 which means it has intermediate polarity (remember that pentane has a dielectric constant of 2.1 I think, so it is nonpolar). Since the alumina, diethyl ether, and the fluorenone are all polar, the fluorenone will travel faster through the alumina than would the fluorene, because there is no attraction between all these polar compounds which will allow it to move faster, rather than a nonpolar and polar chemical having an attration towards each other and thus moving more slowly. Solution fluorene is mobile phase and fluorenone is stationary phase because : Mostly,it depends on the solvent you are using, but lets assume you use pentane as the solvent for fluorene and diethyl ether as the solvent for fluorenone. Used in this order, fluorene should actaully move slower down the column due to the the polarity of the alumina and the nonpolarity of the solvent (pentane). Since fluorene is less polar so, remember the rule like dissolves like? Well, this kind of applies to chromatography wherein rather than dissolve just replace it with moves with, so like moves with like. That being said the pentane will \"carry\" the fluorene through the alumina slower than the latter (which I will explain). Fluorenone is polar because of its C=O bond, that being said the dielectric constant of diethyl ether is 4.3 which means it has intermediate polarity (remember that pentane has a dielectric constant of 2.1 I think, so it is nonpolar). Since the alumina, diethyl ether, and the fluorenone are all polar, the fluorenone will travel faster through the alumina than would the fluorene, because there is no attraction between all these polar compounds which will allow it to move faster, rather than a nonpolar and polar chemical having an attration towards each other and thus moving more slowly..

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equivalent mass is 27.9 . so Molecular mass/moles of electrons per mole = 27.9 looking at the table for atomic masses, the closest we get is for moles of electrons per mole = 2 that is , molecular weight = 55.8 which is for Iron Hence Y is Iron ( Fe ) Solution equivalent mass is 27.9 . so Molecular mass/moles of electrons per mole = 27.9 looking at the table for atomic masses, the closest we get is for moles of electrons per mole = 2 that is , molecular weight = 55.8 which is for Iron Hence Y is Iron ( Fe ).

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This is a case of allopatric speciation. In this case lice from gorilla moved and solutes into two different species. So this is case of geographical speciation where species become apart from each other to an extent that they cannot interbreed. Solution This is a case of allopatric speciation. In this case lice from gorilla moved and solutes into two different species. So this is case of geographical speciation where species become apart from each other to an extent that they cannot interbreed..

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The genetical changes of single locus are responsible for divergent branches of Y chromosome phylogenetic tree in different geographical locations elicit the human origins. The mitochondrial DNA sequences of Neanderthals and modern humans were compared and analyzed. The Hominins species were found to be 30000 year old and were compared with Neanderthal specimens. The relationships between these populations have drawn with the help of the age of specimens plotted against the average genetic distance. The Hominins type sequences are very rare when compared with the modern European samples. The prehistoric Europeans had shown constant number of differences when compared to today’s Europeans and Neanderthals. The Neanderthals have shown the genetic continuity in modern human’s genealogy. The Neanderthals had shown clear discontinuity with the Hominins from upper Paleolithic period to the similar ages. The Neanderthals and early anatomical modern humans were thought to be regional populations of the same evolving species connected by gene flow and both the archaic and modern humans contribute in different proportions to the present human gene pool. The transition and demographic replacement separated the population as Neanderthals and modern humans are considered just as one population observed at different times. The multi regional models predict that at least some level of genetic continuity can be observed from archaic Neanderthal forms to the contemporary Hominins forms and up to today’s Europeans. The results have not matched with the view that the Neanderthal were genetically related with the anatomically modern ancestors of current Europeans or contributed to the present day human gene pool. Solution The genetical changes of single locus are responsible for divergent branches of Y chromosome phylogenetic tree in different geographical locations elicit the human origins. The mitochondrial DNA sequences of Neanderthals and modern humans were compared and analyzed. The Hominins species were found to be 30000 year old and were compared with Neanderthal specimens. The relationships between these populations have drawn with the help of the age of specimens plotted against the average genetic distance. The Hominins type sequences are very rare when compared with the modern European samples. The prehistoric Europeans had shown constant number of differences when compared to today’s Europeans and Neanderthals. The Neanderthals have shown the genetic continuity in modern human’s genealogy. The Neanderthals had shown clear discontinuity with the Hominins from upper Paleolithic period to the similar ages. The Neanderthals and early anatomical modern humans were thought to be regional populations of the same evolving species connected by gene flow and both the archaic and modern humans contribute in different proportions to the present human gene pool. The transition and demographic replacement separated the population as Neanderthals and modern humans .

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