Question

Calculate half life of a reaction

Answer 1

The formula for r half life as I learned it is
Y=a(1-0.5)^x/d

Where a is the initial amount, o. 5 is used because it's half life, and don't is the time of the half life ( say half life of carbon was 2689 years, that would be your d)
Y is the amount remaining and X is the time, say you wanted to know how much was left after 100 years you plug in 100 !for X.
Don't know if this helps but I hope it does!

Answer 2

* d not don't