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An isotope of the element Thallium, Tl-206, undergoes beta decay with a half-life of 3.1 minutes. Assume you begin with 64.00 grams of the thallium

An isotope of the element Thallium, Tl-206, undergoes beta decay with a half-life of 3.1 minutes. Assume you begin with 64.00 grams of the thallium isotope, what mass of the isotope will be left after 9.3 minutes have elapsed?

Only enter your numerical answer below - do not include units. Report your answer to 2 decimal places.

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