SOLUTION: the half life of radium is 1690 years if 40 grams are present now how much will be present in 250 years ?
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Question 925671: the half life of radium is 1690 years if 40 grams are present now how much will be present in 250 years ?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Q[t)=
ln(.5)/-1690 = k = .00041
Q(t]=
.......
Q(250)= = 36.0883gm
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