radioisotope

Q: Consider a radioactive sample with a half-life of one week. How much of the original sample will be…

A: Half-life period is defined as the time taken for amount of the sample to reduce to half of its…

Q: dentify each as alpha, beta, or gamma decay.

A: Radioactive decays are generally of three types namely: Alpha decay, beta decay and gamma decay.…

Q: Torgeir is on a geology field trip and finds a meteorite that contains 10 times more argon-40 than…

A: Radioactive decay of material follows first order kinetics.  Half life is defined as the time…

Q: Give examples of common radioisotopes used in medicine.

A: The examples of common radioisotopes used in medicine has to be given.

Q: A piece of literature has announced that Uranium 238( 23822U) has a binding energy of approximately…

A: We can theoretically calculate the mass of a neutron. But this will be different from the…

Q: A shell fossil that originally contained 100 mg of carbon-14 non contains 75 mg of the isotope.…

A: Initial amount, [A]0 = 100 mg  Final amount, [A] = 75 mg  Half-life, t1/2 = 5570 years

Q: Fill-in the following table for the decay of a particular radioisotope.

A: N (t1/2 ) passed  Total time passed ( in min ) Mass remaining in (g) 0  0 64 1 14 min 32 2 28…

Q: A radioactive isotope has a half-life of 11 minutes.  How many grams of a 18.68 g sample remain…

A: Given Half life = 11minutes = 11*60= 660 second Sample weight = 18.68g Time = 44 minutes = 44*60=…

Q: Magnesium-27 is an unstable radioisotope. For it to become stable, it has to undergo

A: Mg has 27 mass no. and 12 atomic number. Hence, it has 12 protons and 27-12 = 15 no. of neutrons.…

Q: Suppose that 10 units of beryllium are present in a living organism and that the half-life of…

A: Here i have calculated the age of material

Q: After 60 days, 10 grams of radioactive isotope remains from an original 27 g sample. What is the…

A: Given,

Q: The halfof a radioisotope is the amount of time it takes for—— the whole sample to decay two- third…

A: The time in which half of the initial amount of the reactants convert into the product known as half…

Q: After 119 days have elapsed, 1/12 of a radioisotope sample remains undecayed. What is the half-life…

A: Amount of radioisotopes remaining = 112 of the initial amount Number of days taken for the decay =…

Q: A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Find the half-life of…

A: All radioactive decays follows first order kinetics . The integrated rate equation for first order…

Q: Which of the carbon 14 decay by beta emissions

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: A fossilized bone is found to contain 1/1000 the original amount of C – 14. Determine the age of the…

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Q: If a radioisotope's half-life is 2 minutes, after two half-lives there is left   0% of the original…

A: Given, a radioisotope's half-life is 2 minutes.we are asked to calculate the amount of original…

Q: If a radioisotope is required to undergo a decay series in order to form a stable isotope at the…

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Q: What is the correct symbol that is missing from the radioactive decay reaction below, and what type…

A: In decay reaction, we have to balance both atomic number and mass number.     We know Helium  is…

Q: The amount of a radioisotope that remains after two half-lives have passed is:

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Q: Define Radiotracers?

A: Radiotracers also called as radiolabel compound which are use as a path tracers of reaction , drug…

Q: A sample has a half life of 100 years. If it has been 200 years since it started to decay and there…

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Q: c) What percentage of the isotope will remain after 115 days lfur 25. alpha beta and

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Q: rbon decays at a rate proportional to the amount present.

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Q: At a certain instant, 100 grams of radioactive substance is present. After 20 years, 99.76 grams…

A: The half-life is the time required to change the initial amount to half of the amount. It is denoted…

Q: A certain radioactive material is known to decay at a rate proportional to the amount present. If…

A: Consider the given information is as follows; Initial amount N0 = 500 mg Amount after 3 Nt years =…

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: 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: What is the missing symbol in this plutonium fission reaction?

A: The given plutonium fission reaction is, For atomic number of the unknown = 94 - 38 = 56 The symbol…

Q: How many of the nuclei of a radioactive sample containing 2048 nuclei decay in 3 years, if it's half…

A: Half life of a radioactive sample is the time in which half of the sample is decayed i.e. 50% of the…

Q: An unknown radioactive element decays into non-radioactive substances. In 340 days the radioactivity…

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Q: A radioactive sample contains 2.45g. How much willl remain after 11.4 days? (Half life is 3.8 days)

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Q: While harder to access another radioactive isotope Tc 93 has a halt life of 2.73 hours of it weee…

A: suppose it is possible to collect Tc 93m, it would be a good substitute because of its high…

Q: It is well known that any radiocarbon takes several decades to disintegrate. In an experiment, only…

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Q: 9) Complete the following scheme for 4K decays: (B decay or electron capture or a decay)

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Q: 29. When high energy radiation knocks an electron out of an atom that it strikes, a is formed. a.…

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Q: what is the half life of an isotope that decays to 25% of its original activity in 68.9 hours?

A: For a first order reaction, rate constant can be calculated as

Q: A rock contains a Pb-206 to U-238 mass ratio of 0.473:1.00. Assuming the rock did not contain any…

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Q: A sample of thorium-232 decays via the following sequence of emissions: alpha, beta, beta, alpha.…

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

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Q: An oxygen atom has been bombarded by an alpha particle and has lost an electron. This oxygen ion…

A: an oxygen atom has been bombarded by an alpha particle and has lost electron. During this process…

Q: 29. When high energy radiation knocks an electron out of an atom that it strikes, a is formed. a.…

A: We need to find out which of the given option is the result when an electron is removed from atom…

Q: After 60 days, 10 grams of radioactive isotope remains from an original 38 g sample. What is the…

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Q: Elements up to what number can be a radioisotope that is naturally occurring? 68 88 92 102

A: Elements up to what number can be a radioisotope that is naturally occurring?

Q: Unstable parent nucleus Daughter Atomic number: 1 fewer nucleus Electron (-) Proton Neutron- Atomic…

A: Nuclear reaction: A nuclear reaction must cause a transformation of at least one nuclide to another.…

Q: After 119 days have elapsed, 1/21 of a radioisotope sample remains undecayed. What is the half-life…

A: Suppose the initial amount of sample be Ao After 119 days, amount remaining, A = (1/21) Ao The…

Q: A certain radioisotope has a half-life of 9.54 days. What percentage of an initial sample of this…

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Q: 65 Predict the mode of decay Ni undergoes. Positron Alpha Beta It is stable and does not undergo…

A: Given that  Decay of 65Ni

Q: Identiy the missing particle in the following nuclear equation

A: We have given that  Identiy the missing particle in the following nuclear equation.  23892U…

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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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.