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A 15m x 15m x 3.0m basement had a high radon content. On the daythe basement was sealed off from its surroundings so that noexchange of air could take place, the partial pressure of222Rn was 1.2*10-6 mmHg. Calculate the numberof 222Rn isotopes (t1/2= 3.8d) at thebeginning and end of 34 days. Assume STP.
Day 1 (beginning)
_____ atoms
Day 34 (end)
_____ atoms

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