A nuclear reaction of significant historical note occurred in 1932, when a beryllium target was bombarded with alpha particles. Analysis of the experiment indicated that the following reaction occurred: He + Be → C+? 12 6.
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- The isotope palladium-112 undergoes beta decay. Write the reaction equation and determine the identity of the daughter nucleus. 112 46 Pd → 112 47 Ag + 0 −1 e 112 46 Pd → 111 47 Ag + 0 −1 e 112 46 Pd → 112 45 Rh + 0 −1 e 112 46 Pd → 113 47 Ag + 0 −1 e 112 46 Pd → 111 45 Rh + 0 −1 eCarbon-14 is naturally rare, but can be produced by the reaction n + 14N → 14C + p. How much energy in MeV is released in this neutron capture? (Assume 1 u = 931.5 MeV/c2.)PLS help asap
- 40K is an unusual isotope, in that it decays by negative beta emission, positive beta emission, and electron capture. Find the Q values for: (a) negative beta emissionThe nucleus PO has a half-life of 122.2 s; 0 has a half-life of 26.9 s. Assume, that at some time a sample contains equal amounts of both isotopes. What is the ratio of 0 to O after 19.0 minutes ? 15 19If air is 80% N15 and 20% O16. Using the data below, calculate the average distance a thermal neutron travels in air before having an interaction. Air density = 1.202 gm/cm3 %3D o16 atomic wt 15.994 gm N15 atomic wt = 14.0067 gm %3! N15 total microscopic cross 016 total microscopic cross section = 4.03 b 12.20 b %3D section %3D 129.328 cm 1.855 cm 123.762 cm 12.653 cm
- Find A and identify X in the following nuclear reactions: (a) ¹H + Be → AX + n; (b)¹²C + ¹H → AX; (c) 15N + ¹H→ 4He + AX. (a) A = (b) A = (c) A = HI i Hi X: X: X: >A fusion reaction that has been considered as a source of energy is the absorption of a proton by a boron-11 nucleus to produce three alpha particles: 1/1H + 11/5B → 3(4/2He)This reaction is an attractive possibility because boron is easily obtained from the Earth’s crust. A disadvantage is that the protons and boron nuclei must have large kinetic energies for the reaction to take place. This requirement contrasts with the initiation of uranium fission by slow neutrons. (a) How much energy is released in each reaction? (b) Why must the reactant particles have high kinetic energies?Carbon-14 is naturally rare, but can be produced by the reaction n + 14N → 14C + p. How much energy in MeV is released in this neutron capture? (Assume 1 u = 931.5 MeV/c2.)
- A building has become accidentally contaminated with radioactivity. The longest-lived material in the building is strontium-90. (The Sr is 89.9077 u.) If the building initially contained 7.7 kg of this substance and the safe level is less than 90 38 atomic mass of 10.3 counts/min, how long will the building be unsafe? yrI need help on this questionThe following fusion reaction releases 2.16 10^9 kJ per mole of deuterium reacted. How much mass is lost in the reaction per mole of deuterium reacted?