Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 13, Problem 9P
To determine
The relative abundance of two forms.
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How many kJ of energy are released to form one mole of 133Cs from protons and neutrons if the atom has a mass of 132.905429 amu? Please remember to include the mass of electrons in the calculation. Given the mass of a proton is 1.007825 amu
What minimum energy E(min) is needed to remove a neutron from K40 and so convert it to K39? The atomic masses of the two isotopes are 39.964000 and 38.963708 u, respectively.
E(min) = ? eV
in the stable isotope of Potassium 39K there are 19 electrons, 19 protons and 20 neutrons. The mass of the neutral atom is 38.96371 u. Calculate:
Total mass / u
Mass defect / u
Binding energy / J
Binding energy / MeV
Mass of the proton = 1.007276 u
Mass of the neutron = 1.008665 u
Chapter 13 Solutions
Modern Physics
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- (a) An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is 1.00 m in diameter, how big should she try to make the nucleus? (b) How easy will this be to do?arrow_forwardNo stable nuclides exist that have Z greater than ___. (10.3)arrow_forward(a) Write the decay equation for the decay of 235U. (b) What energy is released in this decay? The mass of the daughter nuclide is 231.036298 u. (c) Assuming the residual nucleus is formed in its ground state, how much energy goes to the particle?arrow_forward
- Silver has two stable isotopes. The nucleus, 47107Ag , has atomic mass 106.905095 g/mol with an abundance of 51.83% ; whereas 47107Aghas atomic mass 108.904754 g/mol with an abundance of 48.17% . Find the atomic mass of the element silver.arrow_forwardThe element 218Po (Polonium-218, Z = 84, atomic mass 218.008966 u) can decay through the emission of a β-particle to 218At (Astatine-218, Z = 85, atomic mass 218.00880 u). If all of the energy released is carried away by the β-particle's kinetic energy, calculate the kinetic energy of the β-particle.answer in units of MeV, correct to two decimal places.arrow_forwardThe isotope iron-56 has a nuclear mass of 55.9349375 u. Calculate the binding energy of iron-56 using the following information: Mass of Proton: 1.007825 u, Mass of Neutron: 1.008665 u, 1 u = 931.5 MeV a 3.274 eV b 6.153 eV c 8.790 eV d 9.624 eVarrow_forward
- Write the appropriate symbol (with A, Z and the element symbol) for an yttrium isotope that has 39 protons and 50 neutrons in its nucleus.arrow_forwardThorium 230 90Th decays to radium 22688Ra by a emission. The masses of the neutral atoms are 230.033134 u for 230 90Th and 226.025410 u for 226 88Ra. If the parent thorium nucleus is at rest, what is the kinetic energy of the emitted a particle? (Be sure to account for the recoil of the daughter nucleus.)arrow_forwardUse the below values for this problem. Please note that the mass for H is for the entire atom (proton & electron). Neutron: m = 1.67493x10-27 kg = 1.008665 u = 939.57 MeV/c² . ¹H: mH = 1.67353x10-27 kg = 1.007825 u = 938.78 MeV/c² 1 1 u = 1.6605x10-27 kg = 931.5 MeV/c² . Consider the following decay: 239 Pu 235 U+ a. 239 Pu has a mass of 239.0521634 u, 235 U has a mass of 235.0439299 u, and a has a mass of 4.002603 u. 94 92 94 92 Determine the disintegration energy (Q-value) in MeV. Q = Determine the binding energy (in MeV) for 239 Pu. 94 EB =arrow_forward
- The element 218Po (Polonium-218, Z = 84, atomic mass 218.008966 u) can decay through the emission of a β-particle to 218At (Astatine-218, Z = 85, atomic mass 218.00881 u). If all of the energy released is carried away by the β-particle's kinetic energy, calculate the kinetic energy of the β-particle.Give your answer in units of MeV, correct to two decimal places.arrow_forwardTritium is an isotope of hydrogen that decays by emitting beta particles. It is used in some luminous signs. The symbol for tritium is H. 1. a. Determine the binding energy in units of MeV. Given the atomic mass of tritium is 3.0160492 u b. Describe three differences between an alpha particle and a beta particle.arrow_forwardAn unknown element X has the following isotopes: ⁶⁴X (49.00% abundant), ⁶⁶X (28.00% abundant), ⁶⁸X (23.00% abundant). What is the average atomic mass in amu of X?arrow_forward
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