How long will it take 70 grams of cobalt-60 to decay to 7 grams? The half-life of cobalt-60 is 5.3 years. Show your work.

Q: The half-life of strontium-90 is 28 years. How long will it take a 56 mg sample to decay to a mass…

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Q: 56.7 × (0.97612)t grams. How long before half of the initial amount remains?

A: The amount of a sample of radioactive strontium-90 remaining after t years is given in file.

Q: The half-life of substance X is 3.5 years.  How long will it take for a 96.0 mg sample of substance…

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Q: odine -131 has a half-life of approximately 8 days. ind the amount of iodine-131 left from a 100…

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Q: ine-131 has a half-life of 8 days. If you start with a sample of 10 grams of lodine 131 how long w…

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Q: Element X decays radioactively with a half life of 11 minutes. If there are 370 grams of Element X,…

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Q: Uranium 235 is used as fuel for some nuclear reactors. It has a half-life of 710 million years. How…

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Q: Radioactive cesium-137 has a half-life of 30.17 years. How much of an initial amount of 1,000…

A: If N0 is the initial amount and t is the number of years then equation of decay  is given by…

Q: Radioactive radium has a half-life of 1899 years. If 20g of the substance are present initially,…

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Q: Nobelium is a radioactive isotope that has 25 seconds half-life. How long will it take for Nobelium…

A: The formula to calculate the amount of radioactive isotope is N=Noe-λt where N is the rest amount No…

Q: Element X decays radioactively with a half life of 9 minutes. If there are 170 grams of Element X,…

A: Given- Element X decays radioactively with a half life of 9 minutes and there are 170 grams of…

Q: Radium has a weight of 1.5 and a half life of 6 years. What is its weight after 3 years?

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Q: determine how long it will take for 650 mg of a sample of chromium-51, which has a half life of…

A: Half Life-The half life of a substance is thetime taken for half of the substance tobreakdown or…