The radioactive element, thallium – 201, is used medicinally as a radiotracer to study damage in heart tissue. If a patient is injected with a 0. 950 g dose of pure thallium-201, calculate the amount of time that would be required for the amount of thallium-201 in the patient's body to reach 0. 0500 g. Thallium – 201 decays by a first-order process with a half-life, t1/2 = 73. 0 hrs. Solve with complete solution.

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