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1g Ra^(226) is placed in an evacused tub...

`1g Ra^(226)` is placed in an evacused tube whose volume is `5 cc`, Assuming that each `Ra` nucleus yields for `He` atoms which are retained in the tube, what will be the pressure of `He` preoduced at `27^(@)C` after the end of 1590 year? (`t_(1//2)` for `Ra` is `1590` year)

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The correct Answer is:
`43.54` atm
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P BAHADUR-RADIO ACTIVITY-Exercies 9
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