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Radioactive Substance krypton-91 silicon-31 cobalt-55 magnesium-28 iodine-124 lodine-131 cobalt-60 plutonium-241 plutonium-238 Half-life carbon-14 10 seconds 2.6 hours 4.5 days 8.0 days 5.3 years 13 years 86 years 5,730 years plutonium-239 24,400 years Express the half-life of a 700-milligram sample of silicon-31 as an ordered pair, where t represents the time in hours and Q represents the amount in milligrams (t, Q) - Find the value of b in the exponential model Qaet for silicon-31. (Round your answer to seven becimal places.) 18.2 hours 21.0 hours How long will it take 700 milligrams of silicon-31 to decay into 500 milligrams? (Round your answer to two decimal places.) hr

Radioactive Substance krypton-91 silicon-31 cobalt-55 magnesium-28 iodine-124 lodine-131 cobalt-60 plutonium-241 plutonium-238 Half-life carbon-14 10 seconds 2.6 hours 4.5 days 8.0 days 5.3 years 13 years 86 years 5,730 years plutonium-239 24,400 years Express the half-life of a 700-milligram sample of silicon-31 as an ordered pair, where t represents the time in hours and Q represents the amount in milligrams (t, Q) - Find the value of b in the exponential model Qaet for silicon-31. (Round your answer to seven becimal places.) 18.2 hours 21.0 hours How long will it take 700 milligrams of silicon-31 to decay into 500 milligrams? (Round your answer to two decimal places.) hr

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Radioactive Substance krypton-91 silicon-31 cobalt-55 magnesium-28 iodine-124 iodine-131 cobalt-60 Half-life plutonium-241 10 seconds 2.6 hours 18.2 hours 21.0 hours 4.5 days 8.0 days 5.3 years 13 years plutonium-238 86 years carbon-14 5,730 years plutonium-239 24,400 years Express the half-life of a 700-milligram sample of silicon-31 as an ordered pair, where t represents the time in hours and Q represents the amount in milligrams. (t, Q) - Find the value of b in the exponential model Qaet for silicon-31. (Round your answer to seven becimal places.) b- How long will it take 700 milligrams of silicon-31 to decay into 500 milligrams? (Round your answer to two decimal places.)
Transcribed Image Text:Radioactive Substance krypton-91 silicon-31 cobalt-55 magnesium-28 iodine-124 iodine-131 cobalt-60 Half-life plutonium-241 10 seconds 2.6 hours 18.2 hours 21.0 hours 4.5 days 8.0 days 5.3 years 13 years plutonium-238 86 years carbon-14 5,730 years plutonium-239 24,400 years Express the half-life of a 700-milligram sample of silicon-31 as an ordered pair, where t represents the time in hours and Q represents the amount in milligrams. (t, Q) - Find the value of b in the exponential model Qaet for silicon-31. (Round your answer to seven becimal places.) b- How long will it take 700 milligrams of silicon-31 to decay into 500 milligrams? (Round your answer to two decimal places.)
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