Q: Half life of N^16 is 7.1s
(a) I already did part (a) = 0.098)
(b) Show that the time taken for the mass of N^16 in a sample to decrease from 5.0(micro)g to 1.0(micro)g is approximately 16s.
The mark scheme used the N = Noe^-decayconstant(t)
But I thought N meant the number of unstable nuclei? They subbed in 5 and 1, aren't they masses in the sample?
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- Thread Starter
- 30-03-2016 20:56
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- 01-04-2016 18:13
The number and the masses of the unstable nuclei are directly proportional. Increase the number, and the mass increases too.