How much of a 15 gram sample of radium-225 would remain after 5 days

Q: Sodium-24 has a half-life of 14.8 hours. How much of a 587.7 mg sodium-24 sample will remain after…

A: All radioactive decay processes follow first order kinetics.

Q: How much of a 100. g sample of Gold (Au-198) is left after 8.10 days?

A: Atoms of higher atomic masses are unstable and decays to give stable atoms.  These are generally…

Q: A sample of polonium-210 has a half-life of 138 days a)What fraction of polonium-210 remains after…

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Q: How much of a 24 g sample of radium 226 will remain unchanged at the end of 3 half-life periods?

A: Given,  Mass of the sample of radium 226 = 24 g  Mass of the sample of radium 226 remain unchanged…

Q: If we begin with 6.00 mg of iodine-131 (t1/2 = 8.07 hr), how much remains after seven half-life…

A: Given: Initial amount of iodine-131 = 6.00 mg t1/2 = 8.07 hr n = 7 To find: how much iodine remains…

Q: After 52 hours of decay, only 0.06m of Cu-64 remains from the original sample of 1g. What is the…

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Q: The half-life of Po-218 is 3.1 minutes. How many grams of Po-218 would be left after 9.3 minutes, if…

A: M

Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

A: Data given,  Half-life period of 137Cs, t1/2 = 30.2 years Initial amount, No = 100.0 g Amount left,…

Q: The half life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain…

A: given :-  initial amount of sample = 500 mg  half life = 1590 years  To calculate :-  amount of…

Q: How much of a 0.15 g sample of U-238 after the passage of 3200 years? Half life is 4.01×10⁹ years.

A: Given: Mass of sample = 0.15g Duration of decay= 3200 years. Half life= 4.01×109 years To find: The…

Q: The half-life of radium-226 is 1600 years. How long will it take for 10.0 mg of radium-226 to decay…

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Q: How long does it take a 100.00g sample of As-81 to decay to 6.25g?

A: remaining amount of radioactive substance is related with initial amount according to following…

Q: Beginning with 500g, calculate how much of a radioactive compound remains after 152 seconds if the…

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Q: Krypton-85 has a half life of 10 years. Approximately what percentage of Kr-85 produced from the…

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Q: 2. The half-life of radon-222 is 3.8 days. How much of a 100 gram sample is left after 15.2 days?

A: Given data contains, The half-life of radon-222 is 3.8 days. Mass of sample left after 15.2 days is…

Q: A 40.0 mg sample of a radioactive substance decays to 10.0 mg in 10 days. What is the half-life of…

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Q: Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 gg of 32P32P, how many grams will…

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Q: Radium-223 has a half-life of 11.43 days. How long will it take for 80% of a sample of the said…

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Q: The half life of radium 226 is 1602 years. If you have 500 grams of radium today how many grams…

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Q: How much of a 24- gram sample of Radium -226 will remain unchanged at the end of three half- life…

A: Radium-226 is a radioactive element. Here 24 g of the radium sample undergoes radioactive decay. The…

Q: Radium-221 has a half life of 30 seconds. How long will it take for 82% of a sample to decay?

A: Half life =30 seconds Decay percentage = 80%

Q: A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of the…

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Q: A The balf-life of barium-131 is 12 days. How many grams remains after 60 days if the initial sample…

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Q: The half-life of 51Cr is 2.78×101 day. Calculate how much time it would take for an isolated…

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Q: The half-life of oxygen-15 is 124 ss. If a sample of oxygen-15 has an activity of 4800 BqBq, how…

A: Half-life of a reaction is the time at which the initial concentration of the reactant becomes half.…

Q: Radium-221 has a half of 30 sec. How long will it take for 82% of a sample to decay?(Round your…

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Q: Half life iridium 192 is 106.51 days. How many days are required for 60 mg to decay to 7.5 mg

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Q: The half life of iodine-125 is 60 days. What fraction of iodine-125 nuclides would be left after 360…

A: As per guidelines if multiple questions posted , first question is allowed to answer , please post…

Q: The​ half-life of​ silicon-32 is 710 years. If 20 grams is present​ now, how much will be present…

A: Radioactive decay is always a first order reaction. The rate equation for the radioactive decay is :…

Q: They found out that the half or radium is 1700 years. What percentage of radium may be expected to…

A: Given: Half life of radium = 1700 years

Q: How many days would it take for a 1.0 milligram sample to reach this level if the half-life…

A: Since the decay reactions are first order  hence we can say 2 things about them  1) half life =…

Q: The first order decay of radon has a half life of 3.823 days. How many grams of radon remain after…

A: The time at which first order decay of radon takes place is 3.823 days.   The initial weight of…

Q: 3. If the half-life if Iridium-182 is 15 minutes, how much of a 1 gram sample is left after 45…

A: Radioactive isotopes always undergo first order reaction. And the rate of reaction for first order…

Q: Fluorine-21 has a half life of approximately 5 seconds. What percent of the original nuclei would…

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Q: Plutonium-239 has a half life of 2.41x10* yr. If you have a 10.0 mg sample how much will remain…

A: The time where any substance/element gets remained just half of its actual quantity is considered as…

Q: Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. What is the activity of the…

A: The activity of a radioactive sample is measures as `N_0` counts per minute at. The activity of a…

Q: decay

A: T1/2 = 28 yrs N = 0.40 g No = ? at T = 56 years

Q: The half life of radium-226 is 1600 years. How many grams of a 0.25g sample will remain after 4800…

A: After decying the nucleus it emits radiation of electromagnetic rays ,of certain Wavelength.

Q: How much of a 24 gram sample of radium 226 will remain unchanged at the end of three half life…

A: Given, sample of radium-226 has mass of 24 gram.

Q: Polonium 209 (Po-209) has a half life of 103 years. How long would it take a 100-g sample to decay…

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Q: A radioactive sample has a mass of 500 grams. How much remains after two half-lives?

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Q: 19. How much of a 24-gram sample of Radium-226 will remain unchanged at the end of three half-life…

A: Weight of Radium -226 sample taken = 24 g Number of half lives = 3 Radioactive reactions first order…

Q: Calculate the percent activity of the radioactive isotope cobalt-60 remaining after three…

A: Here we are required to find the percent activity of radioactive isotope of cobalt 60 remaining…

Q: If 600,0g of 14C decays after 3 half lifes, how much of the sample would remain ( in grams)?

A: Recall the following relation to calculate amount of radioactive sample remain after a definite time…

Q: Calculate the percent activity of the radioactive isotope iodine-131 remaining after two half-lives.…

A: Interpretation -  Calculate the percent activity of radioactive isotope iodine -131 remaining after…

Q: Thorium-227 has a half-life of approximately 19 days. What percentage of an original amount of…

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Q: The radioactive nuclide Co has a shelf-life of 17.5 hours. What mass Co remains from 0.0100g sample…

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