21. The mass defect in a nuclear reaction is 0.05 u. What is released? the energy 3.00 x 10 ms (e = -', 1u- 1.66 x 10 " kg] A 2.49 x 10- B 7.47 x 10- C 7.65 x 10"J D 8.97 x 10"J
Nuclear Fission
Nuclear fission is a type of nuclear reaction in which heavier nuclei split into lighter nuclei by releasing a large quantity of energy. The elements like uranium-235 and plutonium-239 isotope undergo nuclear fission releasing energy. When nuclei undergo fission, some quantity of mass is lost. The lost mass is converted to nuclear energy. Nuclear fission reaction is used in nuclear power plants and atomic bombs. In nuclear power plants, nuclear reactors are used to generate electricity.
Endothermic Nuclear Reaction
A nuclear reaction can be described as a process where two atoms, or two nuclei or nucleus and subatomic particles such as a proton, neutron interact together, and a large amount of energy is produced and new elements are also produced.
![A 1.8 x 10" J
B 2.7 x 10"J
C 1.8 x 10" J
D 2.7 x 10J
21. The mass defect in a nuclear
reaction is 0.05 u. What is
the energy released?
(e = 3.00 x 10" m s-',
1u= 1.66 x 10-" kg)
A 2.49 x 10-0J
B 7.47 x 10-12J
C 7.65 x 10-1² J
D 8.97 x 10-" J
22. Thorium-228 decays by
emitting an a-particle.
2 Th- 2Ra + a
What is the mass defect of
the decay?
(Mass of 2 Th = 227.97929 u,
mass of 224RA +a=227.97340 u,
1u= 1.66 x 10-2" kg
A 9.78 x 10-30 kg
B 9.78 x 10- kg
C 3.44 x 10 kg
D 3.44 x 10-27 kg
23. The mass defect from the
decay of radium-226 is
8.68 x 10-0 kg. Calculate the
energy released.
(c = 3.00 x 10 m s',
1 eV = 1.60 x 10-1" J]
A 1.36 x 10-23 eV
B 7.81 x 10-13 eV
C 1.57 x 10° eV
D 4.71 x 10" eV
24. A nuclear reactor has
undergone a fission reaction.
After several days, it is
found that 0.09% from 1 g of
uranium-235 was changed to
energy. Calculate the energy
released.
(c = 3.00 x 10 m s']
A 2.7 x 10 J
B 2.7 x 10°J
C 8.1 x 10 J
D 8.1 x 10"J
25. In a nuclear reaction, a total
of 4.30 x 10-12 J of energy is
released. What is the mass
defect?
(c = 3.00 x 10° m s-]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F375ed40a-f296-4054-9a8d-5360f3977b2a%2Fb5f5ba58-6402-4ece-a1de-321bc3668ff1%2F68kz6v_processed.jpeg&w=3840&q=75)
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