What is the half-life, t½, (in hr) when the concentration was 100 mg/L?

Q: A Co-60 source gives a gamma dose rate of 120 μSv/h at 2.2 m away. At what distance (in meter) will…

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Q: If a source contained 153 µCi of Bal133 (T, = 10.66 y) on June 1, 2005, what would be the 9. 10%…

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Q: A point source of radioactive material produces a dose rate of 100 Gy/hr at 1 meter from the source.…

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Q: After the first covid-19 case found in Olde town, a group of volunteers started counting the number…

A: Required : Meaning of the number 0.2

Q: How many Gy of exposure is needed to give a canceroustumor a dose of 40 Sv if it is exposed to α…

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Q: A Geiger- Mueller counter registers an initial reading of 3200 counts while measuring a radioactive…

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Q: How many halE lives would hae to elapse for a Sample of a radioachtve isotope to decraase Of 3cpm?…

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Q: A sample of silver contains 5.00 micrograms of Ag-105.  Determine the activity of the sample in…

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Q: A thyroid cancer patient is given a dosage of 131I (half-life = 8.1 d). What fraction of the dosage…

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Q: Why does %RAD value for the mass values and calculated volume have to be the exactly the same.

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Q: Consider 6 µg of 210 Po. (a) What is the rate in disintegrations per sec? (b) What is the energy of…

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Q: atomic mass unit = 1.661x10-24 grams Technetium-99 has a half-life of 6 hours. Suppose a lab has 80…

A: Half life of Technetium -99      T1/2 = 6 hours Initial amount (mo) = 80 mg  Let amount left after t…

Q: When gamma is 1.88, what is beta

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Q: If a dose with an activity of 1.70 mCi of 123I is given to a patient for a thyroid test, how much of…

A: Given,Initial Activity (A) =1.70 mCiElement used is 123I To Find,Amount of 123I active after 48…

Q: If we had a radioactive waste giving off 5 MeV of gamma radiation, how thick would the following…

A: Given: Radiation needs to be reduced by 99%=0.99 To find: The thickness of substances for air,…

Q: the mass m, is given the equation m=i[0.69]t. i is the intitial dose and t is the number of hours…

A: Given, m=i(0.69)t                  (t comes in the exponent) where i= initial mass             t=…

Q: A worker will need to conduct a repair to a pipe containing radioactive waste. The pipe is 10 m…

A: Part (a): Given that the distance of the worker from the radiation pipe is 50 cm, the radiation dose…

Q: A GM counter has dead time of 250s,it records 20,000 counts per minute,what is the actual count rate

A: Actual count rate=?

Q: The maximum permissible workday dose for occupational exposure to radiation is 26 mrem. A 55-kg…

A: Here's how to find the ratio of the equivalent dose to the maximum permissible dose:Convert absorbed…

Q: a sampling of 15 million particles coming from an exhaust vent contained 60 sulfur dioxide…

A: 60 particles of Sulphur dioxide in 15 million particles can be expressed as a fraction 6015 million…

Q: 15. An IV infusion is administered to a 120 lb patient by IV infusion at a rate of 1.8 mg/kg/hr. The…

A: Given values: Dose = 1.8 mg/kg/hr * 54.43 kg ≈ 98.0 mg/hr V = 15 L half-life = 8 hours Where: C(t)…