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10 A sample of technetium-99 has an activity of 1.5 Ci. How many disintegrations occur in...

10 A sample of technetium-99 has an activity of 1.5 Ci. How many disintegrations occur in the technetium-99 sample in 5.0 sec? 1 Ci = 3.7 x 1010 disintegrations/s

Group of answer choices:

5.6 × 1010    

8.1 × 10–12  

2.8 × 1011

2.0 × 10-10       

1.1 × 1010              

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Answer #1

10 We know that 1C; = 3.7 x 10 Bq Disintegration per second of 1gm radium. Ba Disintegrations per second convert ci to By the

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