The nuclide 244 Bk (berkelium) decays by producing particles, which capture electrons and form He atoms.
Question:
The nuclide 244Bk (berkelium) decays by producing α particles, which capture electrons and form He atoms. Its half-life is 4.4 h. A sample of mass 1.0 mg was placed in a container of volume 1.0 cm3 that was impermeable to α radiation, but there was also a hole of radius 2.0 µm in the wall. What is the pressure of helium at 298 K, inside the container after
(a) 1.0 h,
(b) 10 h?
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