Question: The decay constant of 235 U is 9.8 x 10 -10 y -1 . (a) Compute the half-life. (b) How many decays occur each second

The decay constant of 235U is 9.8 x 10-10 y-1.

(a) Compute the half-life. 

(b) How many decays occur each second in a 1.0 μg sample of 235U? 

(c) How many 235U atoms will remain in the 1.0 mg sample after 106 years?

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