General Chemistry
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A radioactive isotope emits alpha-radiation with an activity of 11.2 mCi and each particle having an energy of 8.49×10–13 J. Assume a person weighing 65.5 kg is exposed to this radiation for 20.0 seconds and that 25.0% of the emitted alpha has been absorbed. Calculate the dose absorbed by the person in millirads and grays.
A typical abdomen CT scan exposes a person to about 20 mGy radiation. How much is this dose in rad units? How many joules are absorbed by a woman if she weighs 60 kg?
Radioactive iodine (I-131) can be used to treat hyperthyroidism in adults. The recommended maximum activity (dosage) for the treatment is 10 mCi. Determine the value of this radiation in disintegrations per second and in becquerels.