Carbon 14 has a half-life of 5730 years, calculate the activity due to C-14 in 1.00 kg of carbon.
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A: Half life of C-14 T1/2= yearsinitial activity of sample A0= BqActivity of sample At = Bq
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Q: The half-life for the decay of carbon-14 is 5.73*10^3 years. Suppose the activity due to the…
A: Half life T1/2= yearsInitial activity of the sample A0=6.9 BqActivity of sample At= 1.0 Bq
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- If tritium has a half life of 12.26 years, how old is a sample if two-thirds of it is now the daughter isotope? What type of decay is responsible if the daughter is Helium-3?What isotope is produced when Np-239 emits a beta particle?Carbon-14, with a half-life of 5730 years, has a decay constant of λ = 1.21 × 10-4 yr-1. A piece of wood from an archaeological site is found to have 1.9 % of its original carbon-14. How many years old (t) is the piece of wood? Express your answer in scientific notation. Example: 1.23e4.
- Europium-141 undergoes a radioactive decay according to the pictured equation (a) Balance the equation for the decay (b) Calculate the reaction energy (c) Is the reaction alpha, beta, or neither type of decayYou inherit 32 kg of cesium-136 after your roommate moves out and leaves it behind. Cesium-137 has a half-life of 30 years. If you pack it in a box and forget about it, but your grandchildren finds it in the attic 90 years from now, how much of the sample is still cesium-137?What fraction f1 of a radioactive sample will be left after 6 half‑lives? What fraction f2 of a radioactive sample will be left after 7.5 half‑lives?
- Use the fact that there are 3.13x107 s/year. (a) The half-life of the radioactive nucleus 22688Ra is 1.58x103 years. What is the decay constant (in s-1) of 22688Ra? (b) If a sample of 22688Ra nuclei has a decay rate of 3.9x105 decays /s at t = 0, then what is the decay rate after the sample is 4740 years old?14C has an activity of 0.25 Bq per gram of carbon for living organisms. The half-life of 14C is 5730 years. If a sample of charcoal from an archeological dig yields a 14C activity of 0.15 Bq per gram of carbon, how old is the material?