Example 9: Tritium (³H) has a half-life of 12.3 years and releases 0.018 6 MeV energy per decay. What is the rate at which energy is released for a 1.5-gram sample of tritium? (NA = 6.02 × 1023 mol-1, 1 year = 3.16 × 107 s, 1 MeV = 1.6 × 10-13 J, and mt = 3.016 05 u)
Q: 1.a. A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus…
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Q: A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus atoms…
A: Hey, since there are multiple questions posted, we will answer first question. If you want any…
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Q: A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus atoms…
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Q: The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy…
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Q: The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy…
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Q: A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus atoms…
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Q: A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus atoms…
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- [Review Topics] [References] Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k in s12 k = b. A sample contains 58.0 mg 48 t° V. How many decay events will be produced in the first second? Assume the atomic mass of 48 V is 48.0 u. decays/s c. A chemist obtains a fresh sample of 8V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days Submit Answer Retry Entire Group 4 more group attempts remainingRadon gas has a half-life of 3.83 days. If 2.92 g of radon gas is present at time t = 0, what mass of radon will remain after 2.20 days have passed? g1.a. A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus atoms are the radioative phosphorus-32 isotope with a half-life of 14.3 days and which decays via beta emision (RBE=1) with an energy of 1.71 MeV. Half of the sodium phosphate is absorbed by the tumor and deposits 9.0 J energy into it. The other half of the solution is absorbed throughout the patient's tissues, also depositing 9.0 J of energy into the 50.0 kg of body tissues. i. What is the dose ( in gray and rem) that the tumor receives? ii. What is the dose ( in milligray and rem) that the rest of the tissues receives? b. Photoelectrons from a material with a binding energy of 2.71 eV are ejected by 420-nm photons. Once ejected, how long does it take these electrons to travel 2.50cm to a detected device? c.The heating element in an electric kettle is rated as 2.0kW. If the waterin the kettle is at 1000.0 oC, what volume of water will be converted in to steam in…
- The number of radioactive atoms in a sample decay as the emission of radiation proceeds and this may be described by an exponential decay N(t) = N0exp(-t/τ) where τ is the decay time. What is the decay time τ if the half-life t1/2 = 3hrs? Select one: a. 8.15 hours b. 3 hours. c. 90 mins. d. 260 mins.B3. In the alpha decay of uranium 232U → 228Th + He, how much kinetic energy (in MeV) will 90 the thorium atom have. Given that Q = 6.46 MeV and the atomic mass of 220Th is 228.028731u. Express the values to 3 significant figures, if necessary.Determine the nucleus density (in kg/m3) of the following four isotopes.4He (m = 4.00260325415 u) = 2.307e17 kg/m^321Ne (m = 20.99384668 u) = ______ (CANNOT BE 2.99328e17 kg/m^3)186Tl (m = 185.97833 u) = ________ (CANNOT BE 2.9946e13 kg/m^3)231Pa (m = 231.035884 u)= _____ (CANNOT BE 3.624e-13 kg/m^3)
- The radium isotope 226 Ra has a hall-life of 1600 years. A sample begins with 3.50x1010 226 Ra atoms. Y Part C N Submit How many are left after 400 years? 195] ΑΣΦ Submit Request Answer Part B How many are left after 2000 years? N= 1971 ΑΣΦ Submit How many are left after 35000 years? Request Answer ΜΕ ΑΣΦΑ Request Answer BAC ? ?Hand written solutions are strictly prohibited.1.a. A 14-gram ovarian tumor is treated using a sodium phosphate solution in which the phosphorus atoms are the radioative phosphorus-32 isotope with a half-life of 14.3 days and which decays via beta emision (RBE=1) with an energy of 1.71 MeV. Half of the sodium phosphate is absorbed by the tumor and deposits 9.0 J energy into it. The other half of the solution is absorbed throughout the patient's tissues, also depositing 9.0 J of energy into the 50.0 kg of body tissues. i. What is the dose ( in gray and rem) that the tumor receives? ii. What is the dose ( in milligray and rem) that the rest of the tissues receives? b. Photoelectrons from a material with a binding energy of 2.71 eV are ejected by 420-nm photons. Once ejected, how long does it take these electrons to travel 2.50cm to a detected device? c.The heating element in an electric kettle is rated as 2.0kW. If the waterin the kettle is at 1000.0 oC, what volume of water will be converted in to steam in…
- The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy 6.1MEV. What is the power emitted by a sample of 242Cm with a starting number of No = 1018 atoms after 80 days? Select one: a. 1.46 mW. b. 34.6 mW. c. 975 μΝ. d. 13.8 mW.S Thorium-234 is a radioactive element that has a decay constant of 3.33 × 10-7s ¹. It decays by beta-decay with an energy of 270 keV. A sample of pure Th-234 has an initial activity of 8.56 × 10¹3 Bq. i) Calculate the initial number of atoms present. ii) Calculate number of days taken for the activity to drop to one-sixteenth of the initial activity. iii) Calculate the initial mass of the sample, and estimate the reduction in mass at the time calculated in (ii).Calculate the energy released in the reaction, in MeV: 6Li + n = 4He + 3H mLi = 6.015123 u; mn = 1.008665 u; mHe = 4.002603 u; mH = 3.016049 u %3D %3D