Multiple Choice
The half- life for beta decay of strontium- 90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium- 90. How many years would pass before the strontium- 90 concentration would drop to 1.0 ppm?
A) 92.3
B) 0.112
C) 96.9
D) 131
E) 186
Correct Answer:
Verified
Correct Answer:
Verified
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