Half life Decay problem?
I'm not sure how to do this problem because it only gives you the half life and the total time of decay...
Uranium-238 decays very slowly, w/ a half-life of 4.47 billion years. What percentage of a sample of uranium -238 would remain after 13.4 billion years?
In detail could you explain this to me??? Thanks
I'm not sure how to do this problem because it only gives you the half life and the total time of decay...
Uranium-238 decays very slowly, w/ a half-life of 4.47 billion years. What percentage of a sample of uranium -238 would remain after 13.4 billion years?
In detail could you explain this to me??? Thanks
-
Amount remaining = Initial Amount(0.5)^(Time passed / time of one half-life)
Amount remaining = 100(0.5)^(13.4 billion years / 4.47 billion years)
Amount remaining = 12.52%
Amount remaining = 100(0.5)^(13.4 billion years / 4.47 billion years)
Amount remaining = 12.52%