SOLUTION: The half-life of silicon-32 is 710 years. If 30 grams is present now, how much will be present in 100 years? (Round your answer to three decimal places.)
A. 11.302
B. 0.021
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Question 456220: The half-life of silicon-32 is 710 years. If 30 grams is present now, how much will be present in 100 years? (Round your answer to three decimal places.)
A. 11.302
B. 0.021
C. 27.21
D. 29.709
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The half-life of silicon-32 is 710 years.
If 30 grams is present now, how much will be present in 100 years?
:
The radioactive decay formula: A = Ao*2^(-t/h); where
A = resulting amt after t time
Ao = initial amt (t=0)
t = time of decay
h = half-life of the substance
:
A = 30*2^(-100/710)
Find 2^(-10/71) on a calc
A = 30*.906988
A = 27.210 grams left after 100 yrs
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