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If the half-life of a radioactive substance is 2 seconds, how much of a 100-gram sample would be left after 8 seconds?
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If the half-life of a radioactive substance is 2 seconds, how much of a 100-gram sample would be left after 8 seconds?

User Chaffelson
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1 Answer

5 votes
m₀=100 g
T=2 s
t=8s

m=m₀/{2^(t/T)}

m=100/{2^(8/2)}=100/2⁴=6.25 g
User Sebf
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