Chemistry

Problem

1 g

\text{Ra}^{226}

is placed in an evacuated tube whose volume is 5 cc. Assuming that each Ra nucleus yields four He-atoms which are retained in the tube, what will be the pressure of He produced at

27^\circ\text{C}

after the end of 1590 year?

t_{1/2}

for Ra is 1590 year.

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