The number of electrons emitted in a 10.0 day period.

Question

A patient swallows a radiopharmaceutical tagged with phosphorus-32 (P), a ß¯ emitter with a half-life of 14.3 days. The average kinetic energy of the emitted electrons is 7.00 x 10² keV. If the initial activity of the sample is 1.31 MBq, determine (a) the number of electrons emitted in a 10.0-day period, (b) the total energy deposited in the body during the 10.0 days, and (c) the absorbed dose if the electrons are com- pletely absorbed in 1 × 10² g of tissue.

Answer 1

Question

Chapter 29, Problem 49P

(a)

To determine

The number of electrons emitted in a 10.0 day period.

(b)

To determine

The total energy deposited.

(c)

To determine

The absorbed dose.

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A patient swallows a radiopharmaceutical tagged with phosphorus-32 (P), a ß¯ emitter with a half-life of 14.3 days. The average kinetic energy of the emitted electrons is 7.00 x 10² keV. If the initial activity of the sample is 1.31 MBq, determine (a) the number of electrons emitted in a 10.0-day period, (b) the total energy deposited in the body during the 10.0 days, and (c) the absorbed dose if the electrons are com- pletely absorbed in 1 × 10² g of tissue.

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