Need an answer to the question "Radon-220 has a half-life of 54 seconds. How much of a 20g sample of this gas would remain after 162 seconds?" Explore the answers and our in-depth analyses for this question.

Radon-220 has a half-life of 54 seconds. How much of a 20g sample of this gas would remain after 162 seconds? | HIX Tutor

<mathjax>#1 "half life" =54s#</mathjax> 
<mathjax>#162/54=3"half lives"=n#</mathjax> 
<mathjax>#20g/2^n=2.5g#</mathjax>

<mathjax>#1 "half life" =54s#</mathjax> 
<mathjax>#162/54=3"half lives"=n#</mathjax> 
<mathjax>#20g/2^n=2.5g#

<mathjax>#2.5g#</mathjax> would remain.

Avery Adams

After 162 seconds, 1/8 (12.5%) of the original sample would remain. Therefore, 2.5 grams of Radon-220 would remain after 162 seconds.