Consider the production series of radioactive sample A decays to sample B then decays to stable...

Consider the production series of radioactive sample A decays to sample B then decays to stable sample C. Na(0)=N0; Nb(0)=N0/4. lambda A and lambda B is equal to lambda. Derive the activity of sample B as a function of time (t), and the time at which Nb is maximum. Show all of the steps in your work and how you get the answers.

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genius_generous answered 3 years ago

An unknown radioactive element decays into non-radioactive substances. In 340 days the radioactivity of a sample...

An unknown radioactive element decays into non-radioactive substances. In 340 days the radioactivity of a sample decreases by 37 percent. (a) What is the half-life of the element? (b) How long will it take for a sample of 100 mg to decay to 74 mg? time needed: (days)

The activity of a radioactive sample is the number of decays per minute that occur in...

The activity of a radioactive sample is the number of decays per minute that occur in the sample. We measured this by detecting the radiation entering the Geiger tube window. Explain why our readings were actually only a small fraction of the actual activity. Also, why did that not seem to matter in the determination of Barium-137m’s half-life? Refer to either your A vs. t or your ln A vs. t graph in your explanation.

Radioactive Decays What are the three most common types of radioactive decays? How do they differ?...

Radioactive Decays What are the three most common types of radioactive decays? How do they differ? Also how many types of decays are there? Please describe them.

The naturally occurring radioactive decay series that begins with 23592U stops with formation of the stable...

The naturally occurring radioactive decay series that begins with 23592U stops with formation of the stable 20782Pb nucleus. The decays proceed through a series of alpha-particle and beta-particle emissions. Part A How many of alpha-particle emissions are involved in this series? Part B How many of beta-particle emissions are involved in this series?

(a) (i) A radioactive sample produces 1536 decays per second at one point in an experiment...

(a) (i) A radioactive sample produces 1536 decays per second at one point in an experiment and 55.888 years later produces 320 decays per second. What is the half-life of this sample? (ii) What is the decay (in y-1)? (iii) What is the mean lifetime of the material? (b) What fraction of a sample of phosphrous-32 is left after 64.26 days? (the half-life of phosphorous-32 is 14.28 days) (c) What period of time is required for a sample of radioacive...

1) A radioactive substance decays at a rate proportional to the amount of the substance at...

1) A radioactive substance decays at a rate proportional to the amount of the substance at present time. Initially 200 grams of a the substance was present and remain 80% of the initial amount after 2 hours. A.) Determine the amount of the substance remaining after 10 hours (counted in grams) B.) Determine the time that 60% of the initial amount of the substance has decayed (counted in hours)

Outside the nucleus, the neutron itself is radioactive and decays into a proton, an electron, and...

Outside the nucleus, the neutron itself is radioactive and decays into a proton, an electron, and an antineutrino. The half-life of a neutron (mass = 1.675 × 10-27 kg) outside the nucleus is 10.4 min. On average, over what distance x would a beam of 5.55-eV neutrons travel before the number of neutrons decreased to 75.0% of its initial value? Ignore relativistic effects.

1. When a radioactive element decays, it is because the balance of neutrons and protons inside...

1. When a radioactive element decays, it is because the balance of neutrons and protons inside the nucleus was unstable. Explain what happens in each of these kinds of decay to make the nucleus more stable (these are the three most common decay types): a. Fission b. Beta-decay ( β ) c. Alpha-decay ( α ) Which of these is more often associated with the production of energy (and weapons)? Why do you think that is?

Example: The radioactive isotope decays by electron capture with a half –life of 272 days. •(a)...

Example: The radioactive isotope decays by electron capture with a half –life of 272 days. •(a) Find the decay constant of the lifetime. •(b) If you have a radiation source containing , with activity 2.00µCi, how many radioactive nuclei does it contain? •(c) What will be the activity of this source after one year?5

A radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. What was the...

A radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. What was the identity of the original nucleus? Show the nuclear equation that leads you to this answer.

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