A sample of drinking water collected from a suburban Boston municipal water system in 2002 contained 0.46 pCi/L of radon. Assume that this level of radioactivity was due to the decay of 222Rn (t1/2 = 3.8 days).
Part 1: What was the level of radioactivity of this nuclide in the sample? _____Bq/L
Part 2: How many disintegrations per hour would occur in 2.5 L of the water? _____disintegrations/h



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