Mole concepts- Atoms and molecules

Atoms & molecule

Chemical reaction involve interaction of atoms and molecules. A large number of atoms/molecules (approximately 6.022xx10^(23) )are present in a few grams of any chemical compound varying with their atomic/molrcular mass. To handle such a large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical in diverse areas such as analytical chemistry, biochemistry, electrochemistry and radiochemistry. The following example illustrates a typical case, involving chemical/ electrochemical reaction, which requires a clear understanding of the mole concept. A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of teh electrodes (atomic mass: Na=23, Hg=200, 1F=96500 coulombs) The total number of moles of chlorine gas evolved is

Chemical reactions involve interaction of atoms and molecules. A large number of atoms and molecules (approximately 6.022 xx 10^(23) ) are present in a few grams of any chemical compound varying with their atomic/molecular masses. To handle such a large number conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical chemistry, biochemistry, electrochemistry and radiochemistry. The following example illustrate a typical case involving chemical/electrochemical reaction which requires a clear understanding of mole concept. A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of the solution is electrolyzed. This lead to the evolution of chlorine gas at one of the electrodes (atomic mass : Na = 23 , Hg = 200 , 1F = 96500 C) The total number of moles of chlorine gas evolved is :

Chemical reaction involve interaction of atoms and molecules. A large number of atoms/molecules (approximately 6.022xx10^(23) )are present in a few grams of any chemical compound varying with their atomic/molrcular mass. To handle such a large numbers conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical in diverse areas such as analytical chemistry, biochemistry, electrochemistry and radiochemistry. The following example illustrates a typical case, involving chemical/ electrochemical reaction, which requires a clear understanding of the mole concept. A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of teh electrodes (atomic mass: Na=23, Hg=200, 1F=96500 coulombs) The total charge in couloms required to complete the electrolysis

Chemical reactions involve interaction of atoms and molecules. A large number of atoms and molecules (approximately 6.022 xx 10^(23) ) are present in a few grams of any chemical compound varying with their atomic/molecular masses. To handle such a large number conveniently, the mole concept was introduced. This concept has implications in diverse areas such as analytical chemistry, biochemistry, electrochemistry adn radiochemistry. The following examples illustrate a typical case involving chemical/electrochemical reaction which requires a clear understanding of mole concept. A 4.0 molar aqueous solution of NaCl is prepared and 500 mL of the solution is electrolysed. This lead to the evolution of chlorine gas at one of electrodes (atomis mass : Na = 23 , Hg = 200 , 1F = 96500 C) If the cathode is a Hg electrode, the maximum weight (g) of amalgam formed from the solution is :

Find the no. of mole of phosphorus in 92.9 g of phosphorus assuming that molecular formula of phosphorus in P_(4^(.) . Also determine the no. of atoms and molecules of phosphorus in the sample.

O_(2) molecules consists of two oxygen atoms. In the molecules , nuclear force between the nuclei of the two atoms

O_(2) molecules consists of two oxygen atoms. In the molecules , nuclear force between the nuclei of the two atoms

As per accepted concept of hormone action, if receptor molecules are removed from target organs, the target organs will

Differentiate between an atom and a molecule.