Question
Science task 120: An ACT senior class applies the information to a public-policy, planning or research investigation. A tracer starts at 0.12 mol and undergoes 4 half-lives of 4 minutes each. How much remains?
Select an option. Your answer will be checked instantly.
Correct Answer: B. 0.0075
Explanation:
After 4 half-lives, amount=0.12000000000000001/2^4=0.0075.
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