In a laboratary, 640 mg of iodine-131 is stored for 30 days and only 40 mg reamining. a)  Determine the half life of iodine-131. Show your work. [3T] b)  After how many days did 20 mg of iodine-131 remain? Show your work

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A: As the unit of rate constant is time-1, it is a first order reaction.  For a first order reaction,…

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Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: Following information given in the question - Half life period of Iodine-131 , t1/2 = 8.04 days…

Q: For a radioisotope where k=1.5x10-4yr-1, how old is a sample when only 10% remains? 15,000 years…

A: The details solution for this is provided below in attach image.

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Q: how much C-14 would be left from a 5000 year-old sample that started as 150 grams? (One Answer) N =…

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Q: Nickel-63

A: We will use first order kinetics formula to get the answer

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.