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Exponential Decay question?
I'm completely stuck on my math homework. The instructions are to complete the table for the radioactive isotope.
Isotope: 226Ra
Half-Life (years): 1599
Initial Quantity: 10 g
Amount after 1000 years: ______
You're supposed to use the exponential decay formula but i'm not sure how you're supposed to apply it. Help?
1 Answer
- Anonymous9 years agoFavorite Answer
Just use the correct formula...
Beginning amount = 10
Half-life = 1599
Elapsed time = 1000
The formula is
final_amt = beg_amt / ( 2^( time / half_life )) )
Then
Final amount = 6.48 g
I suggest you see http://matrixlab-examples.com/half-life-calculator...
.