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""(92)^(235)U+nto""(92)^(235)Uto fission...

`""_(92)^(235)U+nto""_(92)^(235)Uto` fission product + Neutron `3.20xx10^(-11)J`.
The energy released when 1 g of `""_(92)^(235)U` undergoes fission is

A

`12.75xx10^(8)kJ`

B

`18.60xx10^(9)kJ`

C

`8.21xx10^(7)kJ`

D

`6.55xx10^(6)kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
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A thermal neutron strikes U_(92)^(235) nucleus to produce fission. The nuclear reaction is as given below : n_(0)^(1) + U_(92)^(235) to Ba_(56)^(141) + Kr_(36)^(92) +3n_(0)^(1) + E Calculate the energy released in MeV. Hence calculate the total energy released in the fission of 1 Kg of U_(92)^(235) . Given mass of U_(92)^(235) = 235.043933 amu Mass of neutron n_(0)^(1) =1.008665 amu Mass of Ba_(56)^(141)=140.917700 amu Mass of Kr_(36)^(92)=91.895400 amu

Calculate the num her of neutrons present in ""_(92)U^(235) isotope.

The number of nuetrons in _92U^235 nucleus is

The half-life of ""_(92)^(238)U undergoing a-decay is 4.5 xx 10^9 years. What is the activity of 1g sample of ""_(92)^(238)U ?

Calculate the energy released in the following nuclear reaction and hence calculate the energy released when 235 gram of uranium-235 undergoes fission. U_(92)^(235) + n_(0)^(1) to Kr_(36)^(92) + Ba_(56)^(141) + 3n_(0)^(1) Rest masses of U^(235), Ba^(141) ,Kr^(92) and neutron are 235.04390 amu, 140.91390 amu, 91.89730 amu and 1.00867 amu respectively. Avogadro number = 6.023 xx 10^(23) .

Consider the D–T reaction (deuterium–tritium fusion) ""_(1)^(2)H + ""_(1)^(3)H to ""_(2)^(4)He + n (a) Calculate the energy released in MeV in this reaction from the data: m (""_(1)^(2)H) = 2.014102u m(""_1^(3)H) = 3.016049 u (b) Consider the radius of both deuterium and tritium to be pproximately 2.0 fm. What is the kinetic energy needed to overcome the coulomb repulsion between the two nuclei? To what temperature must the gas be heated to initiate the reaction? (Hint: Kinetic energy required for one fusion event =average thermal kinetic energy available with the interacting particles = 2(3kT/2), k = Boltzman’s constant, T = absolute temperature.)

What is the amount of energy released per atomic fission of U-235 by a stray neutron?

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