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Refer to the Graph Showing the Decay of a Radioactive

Question 31

Multiple Choice

Refer to the graph showing the decay of a radioactive substance. Refer to the graph showing the decay of a radioactive substance. If this substance started decaying 280,000 years ago, and 4 mg of it remains, there was roughly _______ mg of the original substance. A) 1 B) 2 C) 8 D) 16 E) 64 If this substance started decaying 280,000 years ago, and 4 mg of it remains, there was roughly _______ mg of the original substance.


A) 1
B) 2
C) 8
D) 16
E) 64

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