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The common system has naming convention for carbon chains as they relate to branching. - n-alkanes are linear
- iso-alkanes have one branch R2CH—
- neo-alkanes have two branches R3C—
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Davisson and Germer's actual objective was to study the surface of a piece of nickel by directing a beam of electrons at the surface and observing how many electrons bounced off at various angles. They expected that for electrons even the smoothest crystal surface would be too rough and so the electron beam would experience diffuse reflection
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one of the consequences of Einstein's special theory of relativity (1905) is that the mass of an object increases with its velocity relative to the observer. When an object is at rest (relative to the observer), it has the usual (inertial = tendency to resist an applied force) mass that we are all familiar with. This is called the 'rest mass' of the object.
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Relativistic quasifree approximations for inclusive scattering on a bound system are investigated. The system is described by means of the Bethe-Salpeter equation. It is shown that final state interaction (FSI) corrections to the relativistic West approximation (on-shell quasifree kinematics for the struck nucleon) are of the same order of magnitude as the quasifree term in the asymptotic limit q→∞. Therefore the on-shell approximation cannot be applied to data analysis
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Quantitized energy is demonstrated in the bright line spectra by the fact that specific, distinct, unique colors come from the excitation of the atoms of a sample of an element.
Quantitized energy means that the energy comes in parcels or packets like marbles but not as a continuously variable amount like string.
So, when an excited atom's electrons fall back into their normal orbit after being excited by outside energy, they give up a specific "packet" of energy or photon of aspecific energy (frequency) which shows up as a characteristic bright line on the spectrum.
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The value of a resistor changes with changing temperature, but this is not as we might expect, mainly due to a change in the dimensions of the component as it expands or contracts. It is due mainly to a change in the resistivity of the material caused by the changing activity of the atoms that make up the resistor. Materials which are classed as CONDUCTORS tend to INCREASE their resistivity with an increase in temperature. INSULATORS however are liable to DECREASE their resistivity with an increase in temperature. Materials used for practical insulators (glass, plastic etc) only exhibit a marked drop in their resistivity at very high temperatures. They remain good insulators over all temperatures they are likely to encounter in use.
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Breaking of covalent bond of the compound is known as bond fission. A bond can be broken by two ways, 1.homolytic bond fission or homolysis (i) In homolysis, the covalent bond is broken in such a way that each resulting species gets its own electron. 2.heterolytic bond fission or heterolysisIn heterolysis, the covalent bond is broken in such a way that one species (i.e., less electronegative) is deprived of its own electron, while the other species gains both the electrons.
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If an atom is in an excited state, it may spontaneously decay into a lower energy level after some time, releasing energy in the form of a photon, which is emitted in a random direction. This process is called spontaneous emission........ It is also possible that the emission is stimulated by incoming photons, which is called stimulated emission. The emission then goes into the same direction as the incoming photon.......
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its difficult to predict the ranks in eee this year because too many papers were held offline and online so just wait for the result and after getting the rank it will be easy to decide
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but you will get other good nits
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this year it will be difficult at 226 marks in aieee to get into nit trichy/warangal with good branch
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tangent at the point asec@,btan@ is given by :--
xsec@/a+ytan@/b = 1
and on comparing thesetwo equations we get
cos@=
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in the given molecule the
Ba, Barium=+2
O, oxygen=-2
H, hydrogen=+1
the oxidation number of whole molecule must be =0
because the molecule is neutral
put the phophurus as x
+2+2(2(+1)+x+(2)-2)=0
2+4+2x-8=0
2x=8-4-2
=2
x=+1
the oxidation number is +1
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The compound is Gadolinium (Gd)
and its electronic configuration is given below :---
1s22s22p63s23p63d104s24p64d105s25p64f75d16s2
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mercury has the very unique configuration i.e. [Xe] 4f14 5d10 6s2
- due to which it resists the removal of electrons
- hence the mercury mercur bonding is very weak because the reason for the strog bond in solid is due to sharing of electron because there is no sharing of electron
- and due to this heat easily overcomes the weak binding energy between mercury atoms therefore mercury boils and melts at even room temperature
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The constant (a) provides a correction for the intermolecular forces.
Constant (b) is a correction for finite molecular size and its value is the volume of one mole of the atoms or molecules.
for chlorine the value of a and b is respectively 6.343 and .05422.
while for ethae they are 5.570 and .06499.
generally for comparing which gas is more liquefiable we use a since it is the measure of attractive forces so more the value of a more is the gas liquefiable
all the best
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in thermodynamics , work done on the system is positive
by your saying its correct dw=Fdx=PAdx=PdV
if we compress apiston then the work is done on the system so its must be positve and since the change in volume is negative and the pressure will be positve so we put a negative sign in te formula so that it obeys the rule
in physics the it just opposite
all the best
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because in solids
1)the atoms or particles are tightly bound
2)they are bound by the strong intermolecular forces
3)therfore they the [articles do not have the space to move hence the solids are rigid in shape
4)but every solid is not rigid(at room temperature) Ex :-mercury
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the best book tht i will prefer is reactions,rearrangements and reagents by S N Sanyal
morrison and boyd is also a good book you can also get it fom it.
first try to clear the basic concepts related to organic chemistry and then mechanism
ask any mecanism here if you are not able to understand it
best of luck
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