Question

Radioactive Decay. the half-life of radium is 1690 years. If 8 grams of radium are present now, how many grams will be present in 100 years?

Answer 1

Oooo there's a special formula for radioactive decay. I think its:
final amount = initial (0.5)^(100/1690)

So the final amount would be 8*(0.5)^(100/1690)... i think