Multiple Choice
If the half-life of some radioactive element is 1 billion years,and a mass of rock originally contained 100 g of that element,how many grams of the radioactive element would be left after three billion years had passed?
A) 6.25 g
B) 12.5 g
C) 25 g
D) 50 g
E) none
Correct Answer:
Verified
Correct Answer:
Verified
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