In a diagnostic procedure, a patient in a hospital ingests 80 mCi of gold-198 (t1/2 = 2.7 days). What is the activity at the end of one month, assuming none of the gold is eliminated from the body by biological functions?
Answer to relevant QuestionsOne isotope of uranium has a mass number of 235, and another has a mass number of 238. What are the numbers of protons, neutrons, and electrons in a neutral atom of each isotope? The radioactive source in most smoke detectors is 241Am, which has a half-life of 432 years. In a typical detector, only about 0.100 mg of this material is needed. (a) Write down its alpha decay equation and predict the ...(a) Use Fig. 29.21 to explain why there is essentially no naturally occurring 239Pu in or on the Earth at present. (b) Use the information in the figure to explain why there is very little (but not zero) 235U naturally ...Would it take a higher temperature to fuse two protons or to fuse two carbon-12 nuclei? Explain. Theoretical physicists often assert that at the extremely high energies thought to have existed in the first moments of the universe, the W particle (which is known to have a mass several hundred times that of the proton) ...
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