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The chemical basis for Markovnikov's Rule is the formation of the most stable carbocation during the addition process. .............
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The electrochemical equivalent of an element is the mass of that element transported by 1 coulomb of electricity. so state unit of electrochemical equivalent of metal is grams/coulomb
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kinetic energy of object is constant if speed, redius and mass all are constant.
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scra exam is held on nov. or dec so, now it is not available on any site
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carbocation over the secondary and primary carbocations.Steric hindrance can be exploited to limit the number of alkylations, as in the t-butylation of 1,4-dimethoxybenzene.
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B3H6N3 IS BORAZINE IS CALLED INORGANIC BENEZENE
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T= p= NOW IN OTHER CASE IF YOU HAVE TO FIND PITCH DISTANCE THEN FIND THE VERTICAL DISTANCE AND DEVIDE IT BY NO. OF TURNS
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The expression for radius is similar as that for the circular motion under magnetic field (earlier case). The only change is that v is exchanged by v⊥ . R=mv⊥qB=mvsinθqB The expressions for time period, frequency and angular velocity etc do not change as these parameters are independent of velocity. The distance between two consecutive points in x-direction determines the pitch of the helical path. This distance in x-direction is traveled by the particle with the parallel component of velocity in the time in which particle completes a revolution. If T be the time period of revolution, then pitch, p, of the helical path is : p=v????T=vTcosθ=2πmvcosθqB
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Example for finding the pitch distance The expression for radius is similar as that for the circular motion under magnetic field (earlier case). The only change is that v is exchanged by v⊥ . R=mv⊥qB=mvsinθqB The expressions for time period, frequency and angular velocity etc do not change as these parameters are independent of velocity. The distance between two consecutive points in x-direction determines the pitch of the helical path. This distance in x-direction is traveled by the particle with the parallel component of velocity in the time in which particle completes a revolution. If T be the time period of revolution, then pitch, p, of the helical path is : p=v????T=vTcosθ=2πmvcosθqB
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in H2O If such molecules are close together, there will be a dipole-dipole interaction between them.
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yeah all have given write answers .. it is O3. It is an allotrope of oxygen, most commonly formed form atmospheric oxygen (O2) on Earth, as in the "ozone layer". 
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hi Chemical kinetics is the study and discussion of chemical reactions with respect to reaction rates, effect of various variables, re-arrangement of atoms, formation of intermediates etc. There are many topics to be discussed, and each of these topics is a tool for the study of chemical reactions. By the way, the study of motion is called kinetics. In this we r interested in amounts reacted, formed, and the rates of their formation. - Molecules or atoms of reactants must collide with each other in chemical reactions.
- The molecules must have sufficient energy (discussed in terms of activation energy) to initiate the reaction.
- In some cases, the orientation of the molecules during the collision must also be considered
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the factorial is only defined on the natural numbers, and there is no sensible way to take a derivative of any function on the naturals.
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at the carbon .........patialy +ve charge occurs because in C=O bond o is more electro -ve atom hence at carbon .patialy +ve charge created . therefore carbonyl compounds undergo nucleophilic addition
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the carbon-carbon bonds in naphthalene show variation in length, suggesting some localization of the double bonds. but in benzene all the C–C bonds have a common length, ,Hence, according to the variation of bond length the resonance energy of naphthalene is less than benzene
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himoment of something means ==> the product of that quantity and the perpendicular distance of it from the fixed axis.If suppose I assume a physical quantity 'force' that is acting in the X-Y plane, then moment of force = magnitude of the force acting x perpendicular distance from the axis(either X or Y)!!!!
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given that , change in length of the wire is remains unchange Hence it is equlibirium equate the thermal stress is in upward direction and stress by force 'mg' is in downward direction now find the equation F/A=Y dT =>mg/A=1011*10*10. 5 from here you can find the value of mass m
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for strees and strain etc. you should study the chapter PROPERTIES OF MATTER
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stress of matter is equal to force per unit area of crossection 
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no. of the nearest atoms is equal to cordination no,
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