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QUESTION
A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. after 12.0 yr, the activity of the sample declines to 2292 disintegrations per second. the half-life of curium-243 is
A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. after 12.0 yr, the activity of the sample declines to 2292 disintegrations per second. the half-life of curium-243 is ________ years.
