The half-life of Radium-226 is 1600 years. If 30 grams are left after 8,030 years, how many grams were in the original sample?

Q: The half-life of bismuth-210, 210Bi, is 5 days.(a) If a sample has a mass of 200 mg, find the amount…

A: Solution-  (a)-The half life periods of Bismuth-210 is 5days.the rate of decay of any substance…

Q: 1. A substance has a mass of 5 grams after decaying for 100 minutes. What was the mass of the…

A: Given that: Mass of substance left after decaying = 5 g Total time for decaying of substance = 100…

Q: The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.9% of the uranium in the original sample…

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Q: The half-life of radioactive chromium-51 is 28 days, If a sample of chromium-51 has a mass of 12.0…

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Q: If the half-life of a parent material is 10 Ma, and about 88% (rounded) has decayed to daughter…

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Q: If the mass of a sample of radioactive cesium-137 decays from 71.9 milligrams to 20.8 milligrams in…

A: The integrated rate law expression for the first-order kinetics is: Half-life relates to the rate…

Q: The half-life of 238U is 4.5 * 109 yr. A sample of rock of mass 1.6 gproduces 29 dis>s. Assuming…

A: The given data contains, mass = 1.6 g. half life=4.5×109 year.

Q: A 1.55 g sample of an isotope has a half-life of 3.8 days. What mass of sample is left after 5.5…

A: given data,sample of an isotope or initial amount of sample =1.55 g sample half life =3.8…

Q: If uranium-238 has a half-life of 45 billion years, how many years would it take for a 10-gram…

A: Given  Half life of U-238 (t1/2)   = 45 billion years 1 billion years    = 109 years  45 billion…

Q: Cobalt-60 has a half-life of 5.3 years. How many half-livesoccur after 21.2 years?

A: Generally, a radioactive decay reaction takes place as a first order reaction.  In a first order…

Q: Plutonium – 236 is an alpha emitter with a half-life of 2.86 years. If a sample initially contains…

A: Given data Half life : t1/2=2.86 year Initial amount : No=2.56 mg time : t=7 year…

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

A:

Q: Ca-60 is used extensively in radiotherapy and its half-life is 5.27 years. How many years will it…

A: Given: half life, t12=5.27 years[A]=0.2[A]o To calculate: Years taken to decrease to 20% of its…

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the time required for…

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Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.5 g remain. What is the original…

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Q: Carbon -14 has a half-life of 5.730 x 10 3 years.  If the original mass of the parent is 501.695 g,…

A:

Q: Iodine-131 has a half-life of 8 days. What fraction of the original sample would remain at the end…

A: Half life is the period at which concentration of reactant reduces half of its original value.

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

A:

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: el The half-life of barium-131 is 12 days. How many grams remains after 60 days if the initial…

A: We have to predict the amount left after certain time.

Q: A 4.0 g sample of Ra-226 decays to 1.0 g. If the half-life of Ra-226 is 1620 years, how much time…

A: Given initial concentration of Ra-226 = [Ra-226]0 = 4.0 g  Final concentration = [Ra-226] = 1.0 g…

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: The half life of bismuth-213 is 46 minutes.  How much of a 20 g sample of bismuth-213 is left after…

A: The unstable nucleus or isotope undergoes radioactive decay to form a stable nucleus. This process…

Q: Can the half-life of a given isotope be manipulated or changed to suit human needs?

A: Answer

Q: Bismuth-209 has a half-life of 2.01 x 1019 years.  How long will it take for 6.92 kg of bismuth-209…

A: We have to predict the time taken.

Q: 1. If the amount of the parent isotope in the original sample of a rock had been 48 grams, about how…

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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: 19) Given : Initial mass of radium-226 = 24 g And time passed = 3 half lives.

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

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Q: The half-life of copper-67 is 61 hours.  If an original sample contains 24 grams how many grams are…

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Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 5.2 g remain. What is the original…

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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 radium 226 is 1602 years. If you have 500 grams of radium today how many grams…

A: This is a first order reaction where the radioactive substance disintegrates. The half life time of…

Q: After 60 days, 10 grams of radioactive isotope remains from an original 80 g sample. What is the…

A: Law of radioactive decay: Law of radioactive decay relates the amount radioactive substance…

Q: The half-life of cesium-137 is 30.2 yrs. If the initial mass of a sample is 1.00kg, how much will…

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

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Q: 1. The radioactive nuclide Co has a half-life of 5.27 years. Calculate the mass of Co that remains…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The half-life of Th-232 is 1.4 x 10^10 years. If there are 50.0 g of the sample left after 5.6 x…

A: Calculate number of half-life:

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: After 103 days, only 2.3 g of a radioisotope remains from a sample that originally has 150 g of it.…

A:

Q: Given the half-life of Carbon-14 is 5770 years, how much of a 540 gram sample is left after 10000…

A: For the given radioactive decay process: Rate constant, k =?  Half-life=5770 years According to…

Q: The 175Pt isotope has a half-life of 2.53 seconds. What percentage of the original quantity of 175Pt…

A: The radio active decay follows first order kinetics. The half life t1/2 and rate constant K of a…

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

A: Half life is the time taken by the original compound to reduce to it's half.

Q: Strontium-90 has a half life of 28 years. If a 5.31 mg sample was stored for 112 years, what mass of…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: A sample of Thorium-228 has a half-life of 1.9116 years. What percent of Thorium-228 remains after…

A: Applying basic concept of radioactivity.

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

A:

Q: How many half lives must have passed for an isotope with a half life of 10 years to decay from 1600…

A: The radioactive decay follows the First Order kinetics.