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The bond energy of an O- H bond is 109 kcal mol 1. When a mole of water is formed from H and O atoms, then 218 kcal is released. Two O-H bonds are there is H2O so 2*109 kcal an
Q. Show the solubility of double salts? The solubility of double salts of lanthanides such as 2Ln (N0 3 ).3Mg (N0 3 ) 2 .24H 2 0 and Ln2 (S0 4 ) 3 . Na 2 S0 4 .xH 2 0 increase
What do you understand by temperature independence paramagnetism? Ans) Compounds which are expected to be diamagnetic may exhibit this kind of weak paramagnetism. It arises from a
atomic structure
1-methylcyclohexene Because 1-methylcyclohexene has dissimilar numbers of alkyl branches at the carbons of its double bond, it gives dissimilar products in the two reactions.
You are given a sample block of an unknown metal. The block displaces 3.24 mL of water and has a mass of 62.5429 g. What is the density of the unknown metal? What is the metal?
The energy required to dislodge electron from excited isolated H-atom, IE 1 = 13.6 eV is: (1) = 13.6eV (2) > 13.6eV (3) 3.4 eV
In Balmer series of hydrogen atom spectrum which electronic transition causes third line: (1) Fifth Bohr orbit to second one (2) Fifth Bohr orbit to first one (3) Fourth
Monosaccharides - Biomolecules These are very simple one unit non-hydrolysable sugars. They have the common formula C n H 2n O n where n changes from 3 to 9 carbon molecules.
The two or more chemical compounds with identical chemical formula but different structures are called isomers, and the phenomenon is known as isomerism. This phenomenon is not res
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