The radionuclide 1311 Has a half-life of 100 hours. The activity of a m = 60mg of 1311 Is about: (N. = 6.022 x 1023 mol-1) 4.3 x 1014Bq o 5.3 x 1014 Bq o 6.3 x 1014Bq o 7.3 x 1014Bq o None of these o
Q: What is the activity of a 20 ng sample of 92Kr, which has a half-life of 1.84 s?
A: In 92gm of 92Kr, will contain 6.02×1023 atoms of 92Kr.
Q: etermine the binding energy of an O-1- 15.990526 amu. A proton has a mass ass of 1.008665 amu. 2.05…
A: The mass of oxygen 16 atom = 15.990526 amu. The nucleus has 8 nuetron and 8 protonThe mass of the…
Q: A sample containing I-131 has an activity of 6.40 × 108 Bq. How many days later will the sample have…
A:
Q: In 1991, German tourists discovered the well-preserved remains of a man, now called “Ötzi the…
A: When scientists date a sample it is essential that the isotope which is used to date the sample…
Q: A tree falls in a forest. How many years must pass before the 14C activity in 1.00 g of the tree’s…
A: Given: The mass of carbon atom is m=1.00 g. The activity of the tree is A=1.00 decay/h. The…
Q: How much is the mass of the sample in grams of Po-218 that has an activity of 5.00 x 1019 Bq? The…
A: Given Activity = rate of disintegration = 5 × 1019 Bq = 5 × 1019 disintegration/second Half life =…
Q: Example (3) : 0.2 gram of pure potassium 40 ("K) emit about 10 beta rays per second .Estimate its…
A: Mass , m = 0.2 gm Atomic weight = 40 To find = Half life
Q: If air is 80% N15 and 20% 016. Using the data below, calculate the average distance a thermal…
A: Let Σ be defined as the microscopic cross-sectional area. Then, Σ=N1σ1+N2σ2 .........1…
Q: The half-life of 231Pa is 3.25×104 years. How much of an initial 10.41 μg sample remains after…
A: Let the half life time of the sample is denoted by th. The formula for the disintegration constant…
Q: The nucleus (15 8) O has a half-life of 122.2 s; (19 8) O has a half-life of 26.9 s. Assume that at…
A:
Q: radiation lab orders 64 Ci of P-32. After 42.9 days the activity of the sample is 8.0 Ci. What is…
A:
Q: What is the binding energy per nucleon of neon-22 (Z = 10) given that it has a mass defect of…
A:
Q: A 60kg person ingests a source of alpha particle (RBE =15). The activity of the source is 0.04Ci.…
A: Given the half-life of the source is 110 years. The number of alpha particles in the source can be…
Q: A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the…
A: Given that,Mass of person (m) = 60 (kg)a: Here we need to find the number of alpha particles that…
Q: A 5.0 x 105 Bq 241Am alpha source is used in a smoke alarm. The device is arranged so that 15% of…
A: (a) The alpha particles that detected by the device is I=15%R×q (1) Here, q is the Charge of an…
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: The rubidium isotope 8Rb is a ß emitter with a half life of 4.9 × 1010 y that decays into 87Sr. It…
A:
Q: The nucleus (15 8) O has a half-life of 122.2 s; (19 8) O has a half-life of 26.9 s. Assume that at…
A: The following data are given:
Q: Determine the mass defect and binding energy of Li (mass: 1.16503 x 10-* kg). Number Number Mass…
A: Given: Atomic Number of Lithium,Z=3Atomic Mass of Lithium,A=7Hydrogen Mass,mH=1.67262×10-27kgNeutron…
Q: The binding energy of a nucleus is 369.4 MeV. What is the mass defect of the nucleus in atomic mass…
A: Binding energy of a nucleus is B.E.=369.4 MeV Note: 1 J=6.2×1012 MeV 1 J=1 Nm 1 N=1 kg·m/s2 1…
Q: The reaction time for an alpha particle with energy 5.5 MeV whose range in air is 4 cm in aluminum…
A:
Q: A radioactive sample of 60Co (t₁/2 = 5.271 y) has a ß- activity of 4.4 X 107 Bq. How many grams of…
A: When the number of protons and neutrons inside a nucleus is not balanced some nuclei will become…
Q: 3. A drug prepared for a patient is tagged with Tc which has a half life of 6.05 h and an activity…
A: Write the expression for the activity. A=A0(12)tt1/2 Here, A is the final activity after time t, A0…
Q: A solid sphere of mass m and radius r rolls without slipping (v=rw) along the track shown in the…
A: Given: Moment of inertia of marble I=25mr2 Rolling without slipping v=rω ω=vr Height…
Q: The half-life of iodine-131 is 8 days. How long does it take for the initial activity of 4500 kBq /…
A: half life of iodine 131 = 8 days Initial activity (Ao) = 4500 kBqm3Final activity (A) = 65 kBqm3
Q: Problem 4: The puck in the figure above on the left has a mass of 0.120 kg. The distance of the puck…
A: The puck of mass 0.12 kg is initially moving in a 0.4 m radius circle with a linear velocity of 0.8…
Q: If air is 80% N15 and 20% O16. Using the data below, calculate the average distance a thermal…
A: The density of air is ρa=1.202 gm cm-3 The density of oxygen is ρo=1.202×20100=0.2404 gm cm-3 The…
Q: What is the activity of a 398.8-g lump of carbon that is 2.79 x 10" years old? Give your answers in…
A:
Q: Find the average binding energy per nucleon of Mg. Select one: O 8.26 MeV/nucleon O 8.62 MeV/nucleon…
A:
Q: M(Al) = 26.99008 M(Na) = 22.99709 M(He) = 4.00277
A: If the 27Al13 emits an alpha particle, the nuclear reaction for the same will be as follows.
Q: An alpha particle looses all of its energy in a gas and produces 15000 ions pair.If energy needed to…
A: Since, alpha particle looses all of its energy to produce 15000 ions pair so, initial energy of…
Q: A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the…
A:
Q: 210Pb has a half-life of 22 years. How many grams of 210Pb are present in 7 mCi pure sample of…
A: Let's calculate the number of molecules using the formula N=Rt1/20.693
Q: A wood artifact discovered in 1990 showed a 14C-activity equivalent to 43% of that found in the…
A: Given : Half life of C-14, t1/2 = 5730 years Let initial count of C-14 be N = 100 The count of C-14…
Q: a) For a homogeneous nucleation process, sketch the dependence of the surface and bulk free energies…
A: Curve Homogenous nucleation
Q: 6C nucleus might be modeled as a composite of three alpha particles. Compare the binding energy of…
A: The binding energy is given by, BE= ZmH+(A-Z)mn-MAc2 Where, mH Mass of hydrogen mn= mass of a…
Q: A radioisotope has a half-life of 5.0 days. The activity of a radioisotope sample prepared ten days…
A:
Q: A single atom of cesium-133 has a mass, in atomic mass units, of 132.90545193 u. Determine a) the…
A:
Q: A technician was accidentally exposed to potassium-42 while doing some brain scans for possible…
A: Activity after 36 hours = 2 micro Ci half life = 12 hr time = 36 hr
Q: Experimental values are obtained from actual experiments. The model represents a theoretical…
A: We need to find the Binding energy per nucleon (B/A) for the sodium atom from the given model.…
Step by step
Solved in 2 steps
