Question
Science task 90: An ACT senior class applies the information to a public-policy, planning or research investigation. A tracer starts at 0.24 mol and undergoes 2 half-lives of 2 minutes each. How much remains?
Select an option. Your answer will be checked instantly.
Correct Answer: D. 0.06
Explanation:
After 2 half-lives, amount=0.24000000000000002/2^2=0.06.
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