The half life of a substance is 49 years. If there are 220 mg present now, how much will remain in 58 years?

Q: The half-life of a radioactive substance is 15 days. If we started with 20 g, how much of the…

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Q: The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain…

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Q: How many 3 3/4 wires can be cut from a spool of wire that is 100 inches long ? Will there be any…

A: Let total length of a wire is x inches. If we have to cut short wires each of length y inches, then…

Q: The half-life of Radium-226 is 1760 years. If a sample contains 400 mg, how many mg will remain…

A: Half life of Radium-226 1760 years Initial value- a∘=400mg Given time=2000 years n=20001760…

Q: The half-life of radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain…

A: The formula to find the amount of remaining radioactive material is given by the expression: An =…

Q: The radioactive substance neptunium-139 decays to 73.64% of its original amount after 24 hours. How…

A: Given that, in 24 hours, 73.64% of its original amount decays. So, in 24 years, 100-73.64=26.36% of…

Q: We have 15 grams of a new type of liquid metal compound. The compound has a half life of 16 hours.…

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Q: The half-life of the drug Morphine in the blood is 120 minutes. If 75 mL are given to a patient at…

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Q: The half-life period of the isotope is 148 hours. The initial mass of an lodine isotope was 17 mg.…

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Q: The half-life of Strontium-90 is 28.79 years. If a sample contains 490 mg, how many mg will remain…

A: Given half life is 28.79 years Initial mass =490mg To calculate mass after 180 years.

Q: A certain drug breaks down in the body at a rate of 18% per hour. If an initial dosage is 500…

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Q: If you start with 7,152 grams of a radioactive kind of lanthanum and the half-life is 93 minutes,…

A: Given that                                 m0=7152 gramsHalf life, T1/2=93 minutes we have to find…

Q: A nurse gives a patient 800 mg of medicine at 10:00 a.m. If the half life of the medicine is 3…

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Q: The half-life of Cesium-137 is 30 days. How much of a 200 mg sample would be left after 165 days?

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Q: How much samarium-153 would remain 72 hours after a patient was treated with 2 grams of…

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Q: the half-life of a drug in the bloodstream is 18h. what fraction of the original drug dose remains…

A: Given the half-life of a drug in the bloodstream is 18h. what fraction of the original drug dose…