chapter 12


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12.
The half-life of 92 U 238 against alpha decay is 4.5 x 109 years. How many disintegrations per second occur in 1 g of 92 U 238 ? Suggested solution: Again, since one k mole of any isotope contains Avogadro's number of atoms, there fore 1 g of 92 U 238 contains Half life T = 4..
One mole is the number of atoms in a 12g sample of carbon-12
The number N A , given by N A = 6.023x10 2 3 mol - 1 is called Avogadro's number, named after Italian scientist Amadeo Avogadro (1776-1856), who suggested that all gases contain the same number of atoms or molecules when they occupy the same volume under the same conditions of temperature and ..
1,2-Dichloroethane (Ethylene chloride), CH
2 ClCH 2 Cl It is prepared by, The addition of chlorine to ethene The action of HCl, PCl 5 or SOCl 2 on 1,2-ethane diol. ..
Calculation of Order of a Reaction from t1/2 Values
A reaction is carried out at two different initial concentrations of a reactant [A], that is [A] 0 , 1 and [A] 0 , 2 and the respective t 1 / 2 values (t 1 / 2 ) and (t 1 / 2 ) 2 are obtained. The order of the reaction can be calculated as follows: ..
Maltose (C12H22O11)
Maltose (C 12 H 22 O 11 ) - Maltose is made up of two a -D-glucose (in pyranose form) units held together by a (1 4) glycosidic bond. As there is a free aldehyde group at C-1 position of the second glucose molecule, maltose is known as reducing sugar. Maltose forms osazones. The enzyme th..
Example:
Solv..
Suggested answer:
Divide by x The general solution is ..
Types of a Second Order Differential Equations
Types of a Second Order Differential Equations - Given Integrate both sides, Integrating once agai..
Step II:
Substituting in the differential equation ..
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