A sample contains 1.0 GBq of ⁹0 Sr and 0.62 GBq of ⁹0Y. (a) What will be the total activity of the sample 10 days later? (b) What will be the total activity of the sample 29.12 years later? chain with the
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Q: Calculate the activity of a pure 9.5-μgμg sample of 32 over 15P (T1/2=1.23×106s).
A: Mass of sample (m) = 9.5 ×10-6 grams Molecular mass of P-32 = 32 grams Half life (T1/2) = 1.23×106…
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A: Given, initial activity N0 = 6.55 x 109 Bq After t=4 hours, activity N = 1.02 x 108 Bq Half life…
Q: A sample has a ¹4C activity of 0.0052 Bq per gram of carbon. (a) Find the age of the sample,…
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Q: The radionuclide 1311 Has a half-life of 100 hours. The activity of a m = 60mg of 1311 Is about: (N.…
A: Given: half life T1/2= 100 hours= 100*3600= 360000 sec we know that T1/2 = 0.693/λ λ is decay…
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Q: a sample with a half-life of 19 days has an initial activity of 7.0 x 10^5 counts/s. what isits…
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Q: radiation lab orders 64 Ci of P-32. After 42.9 days the activity of the sample is 8.0 Ci. What is…
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Q: Find the activity A of a sample containing 4E-6 g of Co (T1/2 = 5.27 years). (Use 59.93 u as the…
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Q: A 7. A saline solution of 24Na with an activity of 300 kBq is injected into the bloodstream of one…
A: The objective of the question is to calculate the patient's blood volume using the given activity of…
Q: What is the activity of a 398.8-g lump of carbon that is 2.79 x 10" years old? Give your answers in…
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Q: (a) A wooden artifact is found in an ancient tomb. Its carbon-14 ( 14 c) activity is measured to be…
A: Known quantities:- Half life of carbon-14 (T1/2)= 5730 years Age of artifact is given by formula…
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A: The mass is proportional to the radiation concentration. Which means that the radiation equation can…
Q: You find a 37.2 g fossilized bone that has an activity of 0.024 counts per second. How old is the…
A: A living matter has 1.3×10-10 % of C-14, and the half-life of C-14 is 5730 years. Thus, determine…
Q: After production, a 300ul solution with a specific activity of 30 GBq / ml was torn. Delivery time…
A: Where:
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- A 228Th source is labeled 1.50 mCi, but its present activity is found to be 1.73 ✕ 106 Bq. A.) What is the present activity in mCi? =______mCi B.) How long ago did it actually have a 1.50-mCi activity? =_____yThe remnants of an ancient fire in a cave in Africa showed a 1C decay rate of 3.9 counts per minute per gram of carbon. If the decay rate in C-14 in freshly cut wood, is 13.6 counts per minute per gram of carbon, how many years ago did the campfire occur?What mass of fluorine -18. (F-18) is an activity of 10mCi? How long will it take for the activity to decrease to 0.15mCi?
- 90 6. Because of its chemical similarity to calcium, Sr can collect in the bones and present a health risk. What percentage 90 90 of Sr present initially still exists after 47.5 y?(The half life of Sr is 28.8 years) 38 % 60 so £60 3 ssf60 sk f60 ssfAfter production, a 300µl solution with a specific activity of 50 GBq/ml was torn. Delivery timeis 1 day. The half-life of the isotope is 4 days. Find the amount of solution that needs to besent so that the customer has 3.0 GBq at the date of delivery.A radiopharmaceutical is labeled with an activity of 480 mCi on April 1 at 6:00am. What is the activity of the formulation in mCi at 6:00am on April 10? The half life of the radioisotope is 8.10 days. Report to the nearest tenth, number only. λ=2.303/t (logN0/N)
- In 1992, Swiss police arrested two men who were attempting to smuggle osmium out of Eastern Europe for a clandestine sale. However, by error, the smugglers had picked up 137Cs. Reportedly, each smuggler was carrying a 1.0 g sample of 137Cs in a pocket! In (a) bequerels and (b) curies, what was the activity of each sample? The isotope 137Cs has a half-life of 30.2 y. (The activities of radioisotopes commonly used in hospitals range up to a few millicuries.)14 A sample has a ¹4C activity of 0.0027 Bq per gram of carbon. (a) Find the age of the sample, assuming that the activity per gram of carbon in a living organism has been constant at a value of 0.23 Bq. (b) Evidence suggests that the value of 0.23 Bq might have been as much as 27% larger. Repeat part (a), taking into account this 27% increase. (a) Number i (b) Number i Units UnitsA sample of radioisotope has a decay constant of 9.978✕10-7 s-1 and prepared with an initial activity of 7.5✕1012 s-1. Find the number of atoms in the sample after 10 days.