Multiple Choice
The half-life of radium is about 1600 years.If a rock initially contains 1 g of radium, the amount left after 8000 years will be about:
A) 200 mg
B) 63 mg
C) 31 mg
D) 16 mg
E) less than 1 mg
Correct Answer:
Verified
Correct Answer:
Verified
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