Science task 70: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A tracer starts at 0.12 mol and undergoes 2 half-lives of 7 minutes each. How much remains?

Science task 70: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A tracer starts at 0.12 mol and undergoes 2 half-lives of 7 minutes each. How much remains?

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