How long will it take sample to decay its original amount
After three days sample of radon-222 has decayed to 58% of its original amount.
(a) Determine half-life of radon-222?
(b) How long will it take sample to decay to 30% of its original amount?
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After three days sample of radon-222 has decayed to 58% of its original amount. How long will it take sample to decay to 30% of its original amount?
Half-life of radium-226 is 1600 years. Assume we have 27-mg sample. After how long will only 19 mg of sample remain?
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