1.

""_(84)^(210)Po decayswith emission of alpha-particle to ""_(82)^(206)Pb with a half-life period of 138.4 days. If 1g of ""_(84)^(210)Po is placed in a sealed tube, how much helium will be accumulated in 69.2 days ? Express the answer in cm^(3) at STP ?

Answer»


ANSWER :`31.23cm^(3)`


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