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a half life of Carbon-14 is 5700 years, if you started with 200 gram sample of carbon-14, how much C-14 would be left after 28500 years? please show how to.
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a half life of Carbon-14 is 5700 years, if you started with 200 gram sample of carbon-14, how much C-14 would be left after 28500 years? please show how to.

User J Hunt
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1 Answer

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Apply the relation between half life and radiactive decay constant,


\lambda=\ln(2)/T_(1/2)

Then, use the relation of radioactive desintegration,


N=N_0e^(-\lambda t)

In this case, using the mass as N0, you will obtain,


N=6.25\ \ g
User Bukzor
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