190, which has an atomic mass of 19.003577 u, decays via p decay to 19F, which has an atomic mass of 18.998403 u. How much energy is released in this decay process? (This energy goes to the kinetic energy of the electron and the antineutrino.)
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- Calculate the binding energy per nucleon of a neutral atom of phosphorous P. The mass of the phosphorous atom is 30.9738 u, the mass of a hydrogen atom H is 1.007825 u and the mass of a bare neutron is 1.008665 u.The half-life of 233 U is 1.6 x 105 years. Calculate: 92 233 i) The number of atoms in 1 gram of U 92 ii) The decay constant, λ (state your answer as s´¹). 233 92 iii) The activity of BUCalculate the energy released in the a decay of 238 U. The atomic masses of 238 U, 234Th and He are 238.050784 u, 234.043593 u and 4.002602 u respectively.
- A radioactive material has a decay constant of λ = 0.0586 yr-1. If it starts out with N0 = 9.03 × 1018 particles, how many (N) will be left after t = 407 years have gone by? Express your answer in scientific notation. (Example: 1.23e4)1. What is the binding energy per nucleon for ?? 1327 (Aluminum – 27)? Note: A neutral ?? 1327(Aluminum – 27) atom has a mass of 26.981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.0086655 u; and a proton has a mass of 1.007277 u. Also, 1 u = 931.494 MeV/c2.a. 8.3 MeVb. 6.7 MeVc. 5.4 MeVd. 3.4 MeVe. 2.8 MeVThe ceramic glaze on a red-orange Fiestaware plate is U2O3 and contains 50.0 grams of 238U , but very little 235U. Calculate the total energy that will be released by the 238U decay.
- Phosphorus has one stable isotope, 31P. The isotope 32P is a neutron-rich radioactive isotope that is used in nuclear medicine. What is the likely daughter nucleus of 32P decay?The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account. How much energy, in megaelectron volts, would you obtain if you completely converted a nucleus of 9 nucleons into free energy?98/43Tc decays by emitting a 140 keV gamma ray—a highenergy photon. The mass of the nucleus is approximately 98 u. By what fraction does the mass of the nucleus decrease when the gamma ray is emitted?
- 238U is long-lived but ultimately unstable; it will eventually spontaneously break into two fragments, a 4He nucleus and a 234Th nucleus, in a process called alpha decay, which we’ll learn about in the next section. A great dealof energy is released in the process. What must be true about the masses of the nuclei involved?A. mU > mTh + mHeB. mU = mTh + mHeC. mU < mTh + mHeThe half-life of Cs-137 is about 9.46*10^8 seconds. The decay constant (λ) is 7.33*10^-10 s^-1. If you start at t=0 with a decay rate of r=1000 Cs-137 decays per second, how many decays per second would you expect to find after 30s? After 300s? After 1000s?according to the reaction equation : 21H + 21H → 32He + 10n calculate the binding energy for the nucleus of the helium isotope. knowing that the masses of 21H = 2.0141 amu 32He = 3.0160 amu proton = 1.0073 amu neutron = 1.0087 amu