Recent content by rneely01

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...