Question #257886
A root cellar receives an input of 0.1 micro Ci of radon (t1/2 is 3.8 days) per hour through the dirt floor. A.if the volume of the room is 15m3, what ventilation rate must be maintained (air changes per hour (ACH)) to keep radon levels below the EPA recommended limit of 4pCi/liter?
1
Expert's answer
2021-10-28T03:00:16-0400

13.6 g/cm^3 is the density of the mercury if 20.0cm3 has a mass of 272g


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