In the above illustration, suppose there are `3.0 xx 10^7` radon atoms `T_1//2 =3.83` days or `3.31 xx 10^5 s` trapped in a basement. (a) How many radon atoms remain after `31` days ? Find the activity (b) just after the basement is sealed against further entry of radon and (c) days later.

Suppose 3.0 xx 10^7 radon atoms are trapped in a basement at a given time. The basement is sealed against further enetry of the gas. The half - life of radon is 3.83 days. How many radon atoms remain after 31 days?

Suppose 3.0 xx 10^7 radon atoms are trapped in a basement at a given time. The basement is sealed against further enetry of the gas. The half - life of radon is 3.83 days. How many radon atoms remain after 31 days?

Radon, ._(86)^(222)Rn , is a radioactive gas that can be trapped in the basement of homes, and its presence in high concnetrations is a known health hazard. Radon has a half-life of 3.83 days . A gas sample contains 4.0 xx 10^(8) radon atoms initially. (a) How many atoms will remain after 12 days have passed if no more radon leaks in? (b) What is the initial activity of the radon sample?

Radon, ._(86)^(222)Rn , is a radioactive gas that can be trapped in the basement of homes, and its presence in high concnetrations is a known health hazard. Radon has a half-life of 3.83 days . A gas sample contains 4.0 xx 10^(8) radon atoms initially. (a) How many atoms will remain after 12 days have passed if no more radon leaks in? (b) What is the initial activity of the radon sample?

Find the activity of 1.00 mg of radon Rn^222 , whose atomic mass is 222 u, given that half-life of radon is 3.8 days