Find activity per unit mass- of 2SU. Half-life time of U is T/2 = 4.51 10° years.
Q: Question 4. A synthetic radioisotope is freshly prepared in a lab that has an ac- ivity of 10.0 mCi.…
A: Given data as per question t = 5.00 h A0 = 10.0mCi
Q: λ =
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A: Since you have asked multiple questions we will solve first question for you.please post remaining…
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A: Given, The half-life, t1/2=1.405×1010 year The mass of the thorium, m=230×10-3 g The molecular mass,…
Q: 2. Find the average binding energy per nueleon for Bromine, Br (atomic mass= 78.918336 u). a) 8.69…
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Q: The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.46 h later it is 7.10 mCi.…
A: Given that: The initial activity is N0=10.7 mCi The final activity is N=7.10mCi The time is t=0.46h…
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A: Given: The mass of person is m=65 kg. The half life of nucleus is t1/2=1.28×109 y. The activity due…
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A: N=Noe-λtNo is the number present at t=0 and λ is the decay constantλ=0.693t12The radioactive dating,…
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A: from the given information,
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Q: The activity of a sample of a radioisotope at some time is 10.5 mCi and 0.46 h later it is 7.00 mCi.…
A: Initial activity of isotope is Ro = 10.5 mCi Activity after some time is R = 7.00 mCi Time elapsed…
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A: Given: The initial activity of the radioactive material at t = 0 (7:00 A.M) is A0 = 347 MBq The…
Q: There is more than one isotope of natural uranium. If a researcher isolates 1.00 mg of the…
A: mass = 1 mg = 0.001 g Activity = 80Bqhalf life ??
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Q: A tree falls in a forest. How many years must pass before the C activity in 1.00 g of the tree's…
A: mass = 1 g number of atoms = number of moles * avogadro number = (1/14)(6.022 * 1023) = 4.3 * 1022…
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A: It's a moderate-level question of radioactivity. It's a little bit confusing because 1st question…
Q: A scientist is studying a 2.234 g sample of thorium-229 (t1/2 = 7340 yrs) in a laboratory. (a)…
A: The mass of the thorium is 2.234 g.The half-life time of the thorium is 7340 years.
Q: e half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. s (b) Calculate the decay…
A: "Since you have posted a question with multiple sub-parts, as per strict guidelines to us we will…
Q: The rate of spontaneous fi ssion in 238U is 6.7 decays per second for each kg of uranium present.…
A: Given,rate of spontaneous fission in 238U R= 6.7 decays per second
Q: Problem 8: In a living organism, a fixed fraction 1.30 × 10-12 of 12C is the radioactive isotope…
A: Given data: fixed fraction =1.30 × 10-12 of 12C Need to determine the numeric value is expected.
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Q: gram of caesuim (55 Cs) decays by B-emission with a half life of 30 years. (a) Name the resulting…
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