Science task 239: The data come from an unfamiliar biomedical or physical-science investigation and must be reasoned from first principles. The setting is a biophysics workshop. For dilution stimulus 239, what is the final concentration?

Science task 239: The data come from an unfamiliar biomedical or physical-science investigation and must be reasoned from first principles. The setting is a biophysics workshop. For dilution stimulus 239, what is the final concentration?

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