3.4 Temperature required for fusion of 1?C.
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A: Given , half life of carbon , t1/2 = 5750 years Lost carbon 14 is 5.19 % Let N0 is the initial…
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A: Using half life concept to solve the problem
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A: 28 mg can be converted as follows.
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Q: found in it is 92 percent of that in living tissue. Carbon-14 has a half life of 5730 years ?
A: We know : The age of the fossil is 690 years.
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A: Given :ln(k8.15e-8) = 7.459e-3To find : Value of k
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A: The half life of carbon 14 is given. t = 5730 years.Carbon -14 decays to Carbon-12
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A: Step 1: Step 2: Step 3: Step 4: solution is given above
Q: 8. How would you describe half-life?
A: This question belongs from radioactivity.
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A:
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- Suppose there is a mineral body which contained some amount of 238U, which has a half-life of 4.51×109 years, but has no lead, the end product of the radioactive decay of 238U. If the ratio of 238to lead atoms today is 0.64, how long ago did the mineral body form?Which of the following doses of radiation (in Sieverts) can lead to death? O 1-3 O Any O 3A 250g sample of Calcium-47 has a half-life of 4.536 ????. How much Calcuim-47 remains after six half-lives? (ans: 3.91g)
- q 7Consider a small pot with a copper base. The base has a thickness of 2.0 mm and a diameter of 15 cm. Water in this pot is boiling at 100 °C. Heat transfer rate is estimated at 250,000 J/s. Assume that heat enters the water only from the bottom of the pot through the copper base. Find the temperature of the heating element on which the copper bottom rests. 200 720Oil and coal generally contain no measurable 14C. What does this tell us about how long they have been buried?
- 1. Find the total binding energy for Francium, 223Fr (atomic mass = 223.019733 u). 87 MeV 2. Calculate the average binding energy per nucleon for Chromium, 2Cr (atomic mass = 51.940509 u).The You-Yangs are a series of rocky granite ridges to the south-west of Melbourne, whose rocks contain crystals of titanite. A field student measures 98.27% of the titanite crystals contain the thorium isotope 232Th. If thorium has a half-life of ?1/2 =14 x 109 years, what is the student's estimate of the age of the You-Yangs? (Units: Years)6. The half-life of a radioactive substance is 20 minutes. If we start with 980 g, find the mass after: a) 1 hour b) 10 minutes c) 1 minute
- (19) Remains recovered in a tomb are found to have 72% of its Carbon-14 remaining. How old might this tomb be if the half-life of Carbon-14 is 5730 years? Group of answer choices A: 2716 yrs B: 3247 yrs C: 2952 yrs D: 1851 yrs E: 4157 yrs6.) A very old specimen of wood contained 10¹2 atoms of 14 C in 1986. (a) How many 14C atoms did it contain in the year 9474 B.C.2 (b) How many 14C atoms did it contain in 1986 B.C.?0UTlat is Lne dlliViLy of th How many radioactive nuclides are in a sample with a radioactivity of 3.1 kCi? The half-life of the sample is 8674 years.