Problem: Radioactive radon-222 gas ( 222 Rn) from natural sources can seep into the basement of a home. The half-life of 222 Rn is 3.8 days. If a basement has 4.0 x 10 13
atoms of 222 Rn per liter of air, and the radon gas is trapped in the basement, how many atoms of 222 Rn will remain...
Homework Statement
½ Life and a First-Order Process
ln [R]t = -(0.18 d-1 ) (30.d)= -5.5
4.0 x 10 [SIZE="3"]13atom/L
[R]t
4.0 x 10 [SIZE="3"]13atom/L = e -5.5 = 0.0042
[R]t = 1.7 x 10...