Science task 90: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A tracer starts at 0.14 mol and undergoes 2 half-lives of 7 minutes each. How much remains?

Science task 90: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A tracer starts at 0.14 mol and undergoes 2 half-lives of 7 minutes each. How much remains?

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