What is the half-life of a 100.0 g sample of nitrogen-16

Last updated: 7/24/2022

What is the half-life of a 100.0 g sample of nitrogen-16 that decays to 6.25 g of nitrogen-16 in 21.6 s? 64.8 seconds 10.8 seconds 43.2 seconds 7.2 seconds none of these choices is correct