What is the specific activity (in Bq/g) if 8.58 µg of an isotope emits 7.4x104 a particles per minute?
Q: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…
A: Number of Thorium nuclei in 390mg of thorium is N = 60.2*1023/mol/232g/mol *(390*10-3g) =…
Q: A 73.0 kg person experiences a whole-body exposure to alpha radiation with an energy of 1.50 MeVMeV.…
A:
Q: Gamma rays may be used to kill pathogens in ground beef. One irradiation facility uses a 60C source…
A: Given: The activity of gamma rays is A=1×106 The energy of first gamma ray is E1=1.17 MeV. The…
Q: 18F is an unstable isotope of fluorine (Z=9) that decays by beta plus emission (β+ decay) with a…
A: The solution can be given as follows :-
Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5730 yr)…
A: No. of atoms of any sample remaining after a time t is given as: N(t)=N0e-tλ The solution of this…
Q: If a radioactive substance has an initial activity of 0.67 Ci and a half-life of 3.0 days, what is…
A:
Q: Alg sample of 1"N is placed in a neutron howitzer with a flux of 1.50 x 104 n/ cm2-s for five days.…
A: Given, flux=1.50×104 n/cm2.smass=1gThe most probable nuclear reaction 14N7+1n0→ 14c6+ 1P1The…
Q: John is a nuclear worker and has a mass of 70 kg. He was exposed to 10 Ci 137Cs source…
A: A substance with unstable nuclei undergoes radioactive decay. A radioactive substance decays…
Q: Problem A You have a 3 mol pure sample of an unknown material. After 3.7 h, you discover that 20%…
A: We can use the equation for radioactive decay: N(t) = N0 e^(-λt) where,N(t) is the amount of…
Q: a sample with a half-life of 19 days has an initial activity of 7.0 x 10^5 counts/s. what isits…
A:
Q: A 85 kg patient swallows a 31 μCi beta emitter with a half-life of 5.0 days, and the radioactive…
A: Given data: The mass of the patient is m=85 kg. The radiation is R=31 μCi. The half-life is…
Q: A student carries out a radioactive decay experiment. She measures the activity of a source as a…
A: Dear student Activity is defined as rate of radioactive decay of nuclei. It is denoted by R = ¥ N…
Q: Gamma rays may be used to kill pathogens in ground beef. One irradiation facility uses a 60Co source…
A: The total amount of energy of gamma rays per beta decay of 60Co can be given as, Here, ε represents…
Q: Calculate the radioactivity of 0.5mg of cobalt 56 in units of curie? Its radioactivity is 50 days,…
A: Given data: The sample amount of cobalt is m=0.5 mg=0.5×10-3 g The atomic mass of cobalt is A= 56 g…
Q: What is the binding energy per nucleon of an alpha particle? The nuclear mass of an alpha particle…
A:
Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr)…
A: Determine the number of carbon molecules per mole. Determine the initial number of atoms of C-14.
Q: What is the half-life in days of a radioactive sample with 4.9x10¹5 atoms and an activity of 6.5×108…
A:
Q: What is the binding energy per nucleon of 24 Pb? Give your answer in MeV
A: Mass defect of Pb is
Q: Sihle, an archaeologist from UWC finds an ancient wooden axe handle at an excavation site at…
A:
Q: A drug tagged with Tc (half-life= 6.05 h) is prepared for a patient. If the original activity of the…
A: Given:-Original activity (Ao)=1.1*104 Bq.Time (t) = 1.8 hoursHalf life = 6.05 hFind Activity…
Q: B) Calculate the average nuclear binding energy of 13AL nucleus, knowing that the mass defect of…
A: Given data: The mass defect of A1328lnucleus, ∆m=0.24136 a.m.u. 1 a.m.u=1.6605×10-27 kg. 1…
Q: 18F is an unstable isotope of fluorine (Z=9) that decays by beta plus emission (β+ decay) with a…
A: solution is given by
Q: As a health physicist, you are being consulted about a spill in a radiochemistry lab. The isotope…
A:
Q: If a patient undergoing radiation treatment for prostate cancer receives 41 Gray ( Gy G y ) of gamma…
A: If a patient undergoing radiation treatment for prostate cancer receives 41 Gray ( Gy G y ) of gamma…
Q: A sealed box containing alloys of metal A and Metal B consisting of the same parts accordingly.…
A: half life of A = 12 years half life of B = 18 years mass of A = 0.53 kg mass of B = 2.20 kg A =…
Q: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…
A: Hlf-life time of radioactive element is Mass of element is Note:Molar mass of is Avogadro's number…
Q: A patient with prostate cancer is treated with implanted seeds that contain the samarium isotope…
A: Given Data:Half life Energy Activity Mass To Determine:The equivalent dose that the gland receives…
Q: Iodine-131 is a beta-emitter, which decay by the first-order rate law with a half-life of 8.0 days.…
A: Let t1/2 denote the half-life of the Iodine-131. It is given as 8 days. The decay constant λ can be…
Q: A. B. Use the worked example above to help you solve this problem. The half-life of the radioactive…
A:
Q: A small region of a cancer patient’s brain is exposed for 24.0 min to 475 Bq of radioactivity from…
A: Given: To find the dose in rads with the given values as,
Q: The radioactive cobalt isotope, 60Co, has an half-life of 63 months and undergoes decay. The molar…
A: Radioactivity is a process in which unstable heavy nuclei convert into more stable lighter nuclei…
Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half- life = 5 730…
A: In this question we have to find the age of the given sample in the nearest year. Please give…
Q: A 73.0 kg person experiences a whole-body exposure to alpha radiation with energy of 1.50 MeVMeV. A…
A: Given problem is based on the dosimetry. Absorbed dose is defined as, the amount of energy deposited…
Q: A living specimen in equilibrium with the atmosphere contains one atom of ¹4℃ (half-life = 5 730 yr)…
A:
Q: A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the…
A:
Q: The half-life of 43100Tc, a ß- emitter, is 15.8 s. a). How many atoms of 43100Tc are present in a…
A: Half life of decay = 15.8 Activity of sample = 0.2×10-6 = 3.7×1010 ×0.2×10-6 = 7400Bq
Q: Gamma rays may be used to kill pathogens in ground beef. One irradiation facility uses a 60Co source…
A: We know that 1Ci=3.7×1010decay/sec The given activity is =1.0×106Ci. Then the activity on decay/sec…
Q: A building has become accidentally contaminated with radioactivity. The longest-lived material in…
A:
Q: What is the activity of a sample of C that contains 6.7x1020 nuclei? The half-life of C is 5700…
A: Solution:In 5700 years 6.5 × 10202 nuclei decay will take place, thus we have:5700 yrs =…
Q: The reaction shown below has a Q value of 13.574 MeV. H+ N - C+ He Determine the atomic mass (in u)…
A: The Q value of the given nuclear reaction is given by, Q=sum of mass of reactants -sum of mass of…
Q: building has become accidentally contaminated with radioactivity. The longest-lived material in the…
A: Answer is 1685.2 years
Q: Iodine-131 is radioactive and has a half life of 8.04 days. Calculate the activity of a 7.4 mg…
A: Given value--- mass = 7.4 mg. half life time = 8.04 days. We have to find--- Calculate the…
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