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Chapter 24: Q24.73 P (page 1105)
When a nucleus forms from nucleons, is energy absorbed or released? Why?
The energy is dissipating.
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Question:Which nuclide(s) would you predict to be stable? Why?
(a)
(b)
(c)
Describe the nature and purpose of these components of a nuclear reactor:
(a) control rods.
(b) moderator.
(c) reflector.
What is the specific activity (in ) if of an isotope emits particles per hour?
In the 1950s, radioactive material was spread over the land from aboveground nuclear tests. A woman drinks some contaminated milk and ingests 0.500 g of 90Sr, which is taken up by bones and teeth and not eliminated.
(a) How muchis present in her body after 10yr ?
(b) How long will it take for 99.9% of the90Sr to decay?
Iodine-is one of the most important isotopes used in the diagnosis of thyroid cancer. One atom has a mass ofamu. Calculate the binding energy
(a) per nucleon in MeV;
(b) per atom in MeV;
(c) per mole in kJ.
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