gauravsingh6990 gauravsingh6990

19-06-2017
Chemistry

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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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dec77cat dec77cat

19-06-2017

m₀=100 g
T=2 s
t=8s

m=m₀/{2^(t/T)}

m=100/{2^(8/2)}=100/2⁴=6.25 g

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