The Activity of a Radioactive Sample Is the Number of Decay

question 57

Multiple Choice

The activity of a radioactive sample is the number of decay events per second. The SI unit of activity is the becquerel (1 Bq = 1/s) . An older unit for activity is the curie (1 Ci = 3.70  10¹⁰/s) . What is the activity in Bq of a sample with an activity of 47  Ci of radiation?

• A)7.9  10 ² Bq
• B)7.9  10 ⁸ Bq
• C)1.7  10¹² Bq
• D)1.7  10 ⁶ Bq
• E)1.3  10 ^{ 16} Bq

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