Question
Science task 110: A New South Wales senior class applies the information to a coastal community planning problem. A tracer starts at 0.14 mol and undergoes 2 half-lives of 8 minutes each. How much remains?
Select an option. Your answer will be checked instantly.
Correct Answer: B. 0.035
Explanation:
After 2 half-lives, amount=0.14/2^2=0.035.
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