Some Important Vitamins
Vitamin A This is a fat soluble vitamin which is present mostly in animals. Its provitamins carotenes are found in plants. Vitamin A is necessary for vision and proper growth. It is necessary for maintenance of proper immune system to fight various infections. Cholesterol synthesis req..
Importance of dipole moment and problems
(ionic bond is an extreme case of polar covalent bonds). The greater the difference in electronegativities of the bonded atoms, the higher is the ionic character. When the electronegativity difference between two atoms is 1.7, then the bond is 50% ionic and 50% covalent. If the electronegativitv di..
Electronic configurations of some important elements
Element Symbol Atomic number Electronic configuration (or Electron arrangement) KLMN Hydrogen H 1 1 Helium He 2 2 Lithium Li 3 2,1 Beryllium Be 4 2,2 Boron B 5 2,3 Carbon C 6 2,4 Nitrogen N 7 2,5 Oxygen O ..
Activity
The importance of the above reactions lies in the production of nitric acid, which is a very important industrial produc..
Activity
Set the apparatus as shown in figure 6.7. Firstly, when ammonia is passed through the longer tube and is made to ignite, it does not catch fire. Then oxygen is sent through the shorter tube. Now when ammonia is ignited, it catches fire and the following reaction takes place: Although the pro..
Set the apparatus as shown in figure 6.7. Firstly, when ammonia is passed through the longer tube and is made to ignite, it does not catch fire. Then oxygen is sent through the shorter tube. Now when ammonia is ignited, it catches fire and the following reaction takes place: Although the pro..Solution:
The given problem is solved in the following table. Empirical formula = MgSO 1 1 H 1 4 Empirical formula mass = (24 x 1) + (32 x 1) + (16 x 11) + (1 x 14) = 24 + 32 + 176 + 14 = 246 Molecular mass = 246 Hence, Molecular form..
The given problem is solved in the following table. Empirical formula = MgSO 1 1 H 1 4 Empirical formula mass = (24 x 1) + (32 x 1) + (16 x 11) + (1 x 14) = 24 + 32 + 176 + 14 = 246 Molecular mass = 246 Hence, Molecular form..Synthetic Rubber - Thiokol
Synthetic Rubber - Thiokol - Another important synthetic rubber is thiokol. It is a polymer of ethylene polysulphide. It can be prepared by the condensation of 1,2-dichloroethane with sodium polysulphid..
Synthetic Rubber - Thiokol - Another important synthetic rubber is thiokol. It is a polymer of ethylene polysulphide. It can be prepared by the condensation of 1,2-dichloroethane with sodium polysulphid..Statement
m ). Molar volume of all gases under normal pressures (1 atm) and normal temperature (273K) have a value of 22.4 litre and contains 6.023 x 10 2 3 molecules. The number is called the Avogadro's number or Avogadro's constant and is denoted by N A . Avogadro's law is very useful in ..
Simple Voltaic Cell
In order to study the working of an electrolytic cell and the phenomena of electrolysis it is important to know the working of a galvanic or a voltaic cell that generates electrical energy from its chemical reaction. In a simple voltaic cell a zinc plate and a copper plate are immersed in..
In order to study the working of an electrolytic cell and the phenomena of electrolysis it is important to know the working of a galvanic or a voltaic cell that generates electrical energy from its chemical reaction. In a simple voltaic cell a zinc plate and a copper plate are immersed in..Ammonia
>Two important resources of ammonia are ammonium salts and ammoniacal liquor obtained by the destructive destruction of coal . Ammonia and ammonium compounds are highly soluble in water and do not occur as minerals in large quantities. The NH 3 molecule has a large dipole moment, and this..
>Two important resources of ammonia are ammonium salts and ammoniacal liquor obtained by the destructive destruction of coal . Ammonia and ammonium compounds are highly soluble in water and do not occur as minerals in large quantities. The NH 3 molecule has a large dipole moment, and this..See what our Users say :
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