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Posted: **Wed Jul 06, 2022 12:31 pm**

: The Radioactive Isotope Of Lead Pb 209 Decays At A Rate Proportional To The Amount Present At Time T And Has A Half Li 1 (7.16 KiB) Viewed 15 times

The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. If 1 gram of this isotope is present initially, how long will it take for 95% of the lead to decay? (Round your answer to two decimal places.) |hr