Important relationships
1 mole of an atom = 1 gram atomic weight of an atom 1 mole of a molecule = 1 gram molecular weight of molecule 1 mole of a gas = 22.4 liters of gas at STP 1 mole of a substance = 6.023 x 10 2 3 , atoms, molecules or ions Molecular weight = 2 x Vapor density 1 molar..
1 mole of an atom = 1 gram atomic weight of an atom 1 mole of a molecule = 1 gram molecular weight of molecule 1 mole of a gas = 22.4 liters of gas at STP 1 mole of a substance = 6.023 x 10 2 3 , atoms, molecules or ions Molecular weight = 2 x Vapor density 1 molar..Some Important Chemical Compounds
Introduction - Sodium belongs to Group I in the periodic table. This group is otherwise known as the alkali metals group. Since the atomic number of sodium is 11, its electronic configuration is 2,8,1. Sodium easily loses the lone electron to attain the stable configuration of neon. Therefore alkal..
Some Important Chemical Compounds Summary
(CaSO 4 ) 2 .H 2 O Gypsum Calcium sulphate dihydrate CaSO 4 .2H 2 O Dead burnt plaster Calcium sulphate anhydrous CaSO 4 Lime stone Calcium carbonate CaCO 3 Some of the important compounds of sodium and calcium were discussed in this chapter. It ..
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..
Importance of dipole moment and problems
The measurement of dipole moment helps in distinguishing between polar and non-polar molecules. Non-polar molecules have zero dipole moment while polar molecules have some value of dipole moment. For example: Non-polar molecules: O 2 , Cl 2 , BF 3 , CH 4 Polar Molecules: HF (1.91 D), ..
Bohr and Bury Scheme - Important Rules
Maximum number of electrons that can be accommodated in a shell is given by 2n 2 where n=shell number For 1 s t energy level, n = 1 Maximum number of electrons in 1 s t energy level = 2n 2 2 x (1) 2 = 2 For 2 n d energy level n=2 Maximum number of electrons in the 2 n d energy le..
Some important vitamins along with their sources and deficiency disease
Name of vitamin Source Deficiency disease Vitamin A (bright eye vitamin) Fish oil particularly shark liver oil, liver of fresh water fish rice polishing, liver, kidney Xerophthalmia i.e, hardening of cornea of eye Vitamin B 1 (thiamine) Yeast, milk, green vegetables etc..
Table 2: Molecular Formulae of important Acids
Acid Molecular Formula Hydrochloric acid HCl Nitric acid HNO 3 Sulphuric acid H 2 SO 4 Phosphoric acid H 3 PO 4 Acetic acid CH 3 COOH Carbonic acid H 2 CO 3 Sulphurous acid H 2 SO 3 Nitrou..
Nitric Acid (HNO3)
The most important and useful oxoacid of nitrogen is nitric acid. Its molecular formula is HNO 3 and molar mass 53 g mol - ..
Nitric Acid (HNO3)
Nitric Acid (HNO 3 ) - The most important and useful oxoacid of nitrogen is nitric acid. Its molecular formula is HNO 3 and molar mass 53 g mol - ..
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