Why are light nuclei used for moderators instead of heavy nuclei?
Q: 12455 Cs has a half-life of 30.8 seconds.a) If we have 9.7 µg of Cs initially, how many Cs nuclei…
A: The objective of the question is to calculate the initial number of Cesium nuclei, the number of…
Q: Your lab has been given a radioactive sample and you determine that the decay constant is 3.00 x…
A: The activity of a radioactive sample R is where is the decay constant and N is the number of…
Q: Find the energy released when 21¹ Pb undergoes - decay to become 21¹Bi. Be sure to take into account…
A: Energy release calculate by using formula, E = | ∆ m | × c2 We need some more data which is we get…
Q: Calculate the binding energy per nucleon (four significant figures) for the reaction below, 223, Ra…
A: The atomic mass of Ra88223 = 223.01850 u The atomic mass of P82209b = 208.98107 u The atomic mass of…
Q: Why is a neutron stable inside the nucleus? (In free space, the neutron decays in 900 s.)
A: Inside the nucleus, the neutron is present with protons. A neutron decays into proton, neutron and…
Q: In stars, fusion continues beyond H+H = He. As the star converts to a majority of He, what other…
A: In a star, initially, the hydrogen atoms from hydrogen gas combineaccording to the pp chain for He…
Q: Why are very high temperatures and pressures required for fusion to occur? O to generate the…
A: Option B i.e. to overcome the replusion between the protons in the nuclei that join.
Q: Tritium is naturally rare, but can be produced by the reaction n +2H → 3H + γ . How much energy in…
A: The energy released from the following reaction can be calculated by finding out mass decay then…
Q: What type of decay happens when a neutron decays into a proton and then emits and electron and…
A:
Q: Fission reactions occur only for nuclei with large nucleon numbers, while exoergic fusion reactions…
A: The ratio of the neutron and proton for stable nuclides or light nuclides is: NZ=1 Here, N…
Q: n the decay or radium-222 produces polonium-218 and helium explain how matter is conserved in a…
A: The nuclear reaction is, Rn86222→Po84218+He24+γ
Q: The following nuclei have induced fission critical energies as listed below. From these data,…
A: We need to determine if the target Nucleus is fissile or fissionable.
Q: Find the Q-value for the nuclear reaction Be + He - C+n+o Given masses of Be = 9.01286 amu He =…
A:
Q: Lex Luthor has found a piece of 239 94 Pu (which he’s going to make into a bomb so he can hold…
A: A 5 kg mass of 239Pu has a half-life of 24,100 years. ( it is a fundamental information found…
Q: Consider the following nuclear reaction. 232 /92U→228/90Th +X (A) What is the product X? (B)What is…
A: For the given reaction
Q: Calculate the binding energy per nucleon for Mo (Mnuc = 97.905409u). Estimate the nuclear binding…
A: Binding energy as the name suggests is the amount of energy required to keep all the nucleons inside…
Q: Natural uranium ore contains about 0.720% of the fissile uranium- 235 isotope. Suppose a sample of…
A: Given data: Natural uranium ore contains about 0.720% of the fissile uranium- 235 isotope and the…
Q: In nuclear fusion, two light nuclei are fused together to form a more stable, heavier nucleus. True…
A: Nuclear fusion: - It is a reaction in which two or more nuclei are combined together to form more…
Q: How do you figure nuclear equation for decay for 210 Pb 82 giving off beta particles?
A: given: P82210b giving off beta particle
Q: Determine the energy yield of the following fission reaction. Use the given masses below. U + dn →…
A: Given thatU92235+n01→Z4094r+T52139e+3(n01)The mass defect is the difference between the mass of…
Q: Question A certain radioactive sample initially has 10, 000 unstable nuclei in it at time t = 0. At…
A: At t = 0 sec, the radioactive sample has initially 10,000 unstable nuclei.at t = 20 yr, the…
Q: 15O and 131I are isotopes used in medical imaging. 15O is a beta-plus emitter, 131I a beta-minus…
A:
Q: Explain why the deuterium tritium mixture must be extremely hot in order for the fusion reaction to…
A: Given:- To explain why the deuterium tritium mixture must be extremely hot in order for the…
Q: What is the range of Strong Nuclear force? [A] Infinite [B] Very short Subnuclear size [C] Very…
A: The strong nuclear force binds quarks into nucleons and binds nucleons together in the nucleus. The…
Q: Carbon-14 is naturally rare, but can be produced by the reaction n + 14N → 14C + p. How much energy…
A: Given : Neutron capture reaction : n + 14N → 14C + p. Required : Energy released in MeV. 1 u =…
Q: Which will leak more neutrons, two separate pieces of uranium or the same pieces stuck together?
A: The uranium atom give neutrons during fission.
Q: Consider two 3^He and 4^He isotopes of helium (Z=2) (d) Explain whether the fusion reaction of 3^He…
A: The given reaction is 3He+4He→7Be Mass of 3He, M(3He) = 3.016029 u Mass of 4He, M(4He) = 4.002603 u…
Q: Why doesn’t uranium ore spontaneously undergo a chain reaction?
A: Given: Uranium chain reaction
Q: Complete each of the following nuclear reaction equations: (a)23592U + 10 n ---> 14156Ba + _____…
A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…
Q: Suppose a cube has a mass of 1.4 kg and the density of nuclear matter (which you can assume is 2.3 ×…
A: The given data are: m=1.4 kgρ=2.3×1017 kg/m3 Here, m and ρ represent the mass and density.
Q: Natural uranium ore contains about 0.720% of the fissile uranium - 235 isotope. Suppose a sample of…
A: Formula to calculate the number of uranium 235 nuclei is,
Q: The half-life of this nucleus is 1.0 seconds. For the following times fill in the rest of the chart…
A: Given half life=1 sec required parent and daughter nuclei at given time
Q: Carbon-14 is naturally rare, but can be produced by the reaction n + 14N → 14C + p. How much…
A: The expression for the energy released during this reaction is,
Q: Adding a proton to 12C results in an unstable nucleus. Check the resulting nucleus for all forms of…
A: Adding a proton to carbon will increase its atomic number from 6 to 7 as well as it will be…
Q: A uranium-235 nucleus absorbs a neutron and the splits into a bromine-87 nucleus, a lanthanum-146…
A: The mass-energy equivalence principle is, ,where is the energy, is the mass defect, and is the…
Q: 46. Old stars obtain part of their energy by the fusion of three alpha particles to form a 1?C…
A: Given, the fact that three alpha particles fuse to form a carbon nucleus. We know, m(4He2) =…
Q: 238U is long-lived but ultimately unstable; it will eventually spontaneously break into two…
A: Consider the following nuclear reaction.
Q: I-135 is a fission product that decays into Xe-135 in a reactor during operation. Write the Q value…
A: Given: I-135 decaying into Xe-135. Initial count of I-135 atoms = 10,000 Time = 48 hours
Why are light nuclei used for moderators instead of heavy nuclei?
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