Asked by Anonymous

half life of tritium is 12.5 years. how much will remain after 100 years if you started wit 256 grams?

15 years ago

Answered by DrBob222

First determine k.
k = 0.593/t<sup>1/2</sup>, then substitute the value of k into the equation below.

ln(256/N) = k(100)
Solve for N in grams.

15 years ago

Answered by Anonymous

Thanks so much!

15 years ago

Answered by DrBob222

I made two typos. k = 0.693/t<sub>1/2</sub>

15 years ago

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