(Simplify your answers. Do not round until the final answers. Then round to four decimal places as needed.) Radioactive Decay Rate, k % per min Substance Half-Life T a) Polonium (Ро-202) b) Lead (Pb-210) c) lodine (I-125) d) Krypton (Kr-75) e) Strontium (Sr-93) f) Uranium (U-229) g) Plutonium (Pu-239) 44.6 mins % per year 22.3 years 1.15% per day O days 16.1% per min mins % per min 7.4 mins % per min 58.0 mins % per year 24100 years

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