""(84)Po""^(210) decays with a particle ...

`""_(84)Po""^(210)` decays with a particle to `""_(82)Pb""^(206)` with a half life of `138.4` days. If `1.0` g of `""_(84)Po""^(210)` is placed in a sealed tube, how much helium will accumulate in `69.2` days. Express the answer in `cm""^(3)` at STP

`28.21cm^(3)`

`31.25cm^(3)`

`36.85cm^(3)`

`38.47cm^(3)`

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._(84)Po^(210) decays with alpha- particle to ._(82)Pb^(206) with a half-line of 138.4 day. If 1.0g of ._(84)Po^(210) is placed in a sealed tube, how much helium will accumulate in 69.2 day? Express the answer in cm^(3) at STP . Also report the volume of He formed if 1g of Po^(210) O_(2) is used.

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