The half-life of 26?? 59 is 44.6 days. How long will it take for 95.0% of a sample of this nuclide to decay?

Q: = 176.5 h) to decay. Use the Calculate the time required for 46.80 % of a sample of X (t, formula…

A: Given : Half life i.e t1/2 of reactant (radioactive isotope) = 176.5 hr. And percent of reactant…

Q: Zinc-71 decays to a gallium-71 nuclide with a half-life of 2.45 minutes. What percent of a zinc-71…

A: We have to find out the percentage of zinc for the given question

Q: Barium-142 is an beta emitter with a half-life of 11.0 min. If we start with 2.500 g of 142Ba, what…

A: The number of half-lives (n) can be calculated as

Q: The time required for one-half of a radioactive isotope to decay into its stable daughter products…

A: Explained as follows

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

A:

Q: 1. The radioactive nuclide has a half-life of 17.5 hours. What a 0.0100 g sample after 24.0 hours…

A:

Q: on 5 A The nuclide As-76 has a half-life of 26.0 hours. If a sample of As-76 weighs 344 g, what mass…

A:

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: The Radioactive decay follows first-order kinetic and thereby its formulae. As we know, t1/2 × k =…

Q: A sample of lead isotope Pb decays by emitting an alpha particle to form the nuclide W. If the half-…

A: Radioactive Decay is the process where an unstable atomic nucleus loses energy in the form of…

Q: At the end of two half-lives, what fraction of the atoms had not decayed?

A: Answer is given below.

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

A: The amount of time that passes is a whole number multiple of the radioactive nuclide half-life.…

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

A:

Q: How many half lives will it take for 50 g of "Tc to decay to 6.25 g?

A: Half-life period was discovered by ernest Rutherford in 1907. Rutherford applied the principle of a…

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

A:

Q: 3. The half-life of radon is 3.82 days. What fraction of a freshly separated sample of this nuclide…

A: The half-life of a radioactive isotope (t1/2 ): All radioactive decay first-order reaction kinetics.…

Q: 3) 120g of Chromium-48 decays. After 6 half-lives, how much of the original nuclei would remain?

A: Given,  Initial amount of Chromium - 48 is 120g. After 6 half lives the original nuclei would remain…

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

A:

Q: Calculate the time required for 52% of a sample of A (t1/2 = 7510 y) to decay.

A: Given that : The half-life of sample A (t1/2)= 7510 y We have to calculate the time required for 52%…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.4 g remain. What is the original…

A: The Answer to the following question is-

Q: The half-life of the nuclide 211 At is 7.5 h. If 0.100 mg of this nuclide is administered for…

A: The answer to the following question is-

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: Given half life = 30.2 years initial Concentration = 100 g Concentration at time t = 0.900 g

Q: 2. A radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013…

A: Radioactive disintegration follows first order kinetics.

Q: The radioactive nuclide P# has a half-life of 14.3 days. How long would a waste containing 10 mg/L…

A: Answer: Radioactive reactions are first order reactions, therefore integrated rate law of first…

Q: A sample of lead isotope Pb decays by 209 82 emitting an alpha particle to form the nuclide W. If…

A:

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

A:

Q: The half-life of 90Sr is 28.8 years. How long will it take (in years) for a 86.1 mg sample of 20Sr…

A: Given t= 28.8 years. t1/2 = ?

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

A:

Q: A sample of Tl-201 has an initial decay rate of 5.88 × 10^4/s. How long will it take for the decay…

A: First, the rate constant value is determined by using the given half life period.

Q: The nuclide 35S decays by beta emission with a half-life of 87.1 days.(a) How many grams of 35S are…

A: The relation between the half life nad the number of nuclei,N=A(t120.6931)........1stWhere,N  =…

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

A:

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: Nuclides with too many neutrons to be in the band of stability are most likely to decay by what…

A: Nuclides with too many neutrons lie above in the band of stability. This nuclie which has more…

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:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.3 g remain. What is the original…

A: Answer

Q: How long long does it take for 78 % of sample of cobalt-60 to decay (the half life is 5,26 years)?

A: The rate of a reaction is expressed as: Rate = k[A]n where k is the rate constant, [A] is the…

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: Since the decay reactions are first order. Hence half life = ln(2) / K  where K = decay constant…

Q: 3.) The Radioactive nuclide co has a half-Life of 8.5 hours, 55 27 what mass of Co Temains from a.…

A: Mass of sample remains after 18 hours is       0.0045 g.

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

A:

Q: What is the half-live of a radioactive isotope if it takes 6.2 days for a 72g sample to decay to…

A: Given, 72 g to decay to 18 g. t = 6.2 days To calculate the half-life.

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.8 g remain. What is the original…

A:

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: Nuclear reactions or nuclear decay follows first order kinetics. Given: Half life t1/2 = 150.…

Q: 5.00 hours of decay, 3.4g of the substance remain. What is the

A: Initial mass of substance is 17.8g Mass of substance after left is 3.4g Decay time 5 hours

Q: A radionuclide undergoes beta decay with half-life of 30.0 years. How many years will it take for 25…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

A:

Q: What fraction of the decay energy is this, noting that the decay mode is π0 → ϒ+ϒ (so that all the…

A:

Q: With a half-life of 6.56 minutes, aluminum-29 decays to silicon-29 nuclide. After 18 minutes, what…

A:

Q: the half-life of aluminum 26 is .74 million years. Suppose an asteroid contained 800 kg of aluminum…

A: The half-life of aluminum 26 is 0.74 million years. The mass of aluminum 26 present in asteroid is…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.