Nuclear Mass Medical imaging with 99Tc*. The isotope 99Tc* is commonly used in s

Question

Nuclear Mass

Medical imaging with 99Tc*. The isotope 99Tc* is commonly used in several different types of medical imaging procedures. It emits a 140-keV Gamma ray (comparable to the energies of diagnostic x rays) and has half-life 6.01 h. What's the change in the nuclear mass after emission of the Gamma ray? Express your answer to two significant figures and include the appropriate units. What's the activity of 0.61 MUg of 99Tc* injected into a patient? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

A) emission of gamma rays doesnt changes the mass of the nuclear.

B)

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