A sample of the inner part of a redwood tree felled in 1874 was shown to have 14C activity of 4.29 dpm/g. Calculate the approximate age of the tree. Use 13.4 dpm/g for the value of A0. t1/2 of 14C = 5730 years (Round your answer to a whole number)

Q: A. 1.5 R/hr 48. Calculate the exposure rate at 3.0 cm from a I source with an activity of 2.0 mCi.…

A:

Q: The graph below shows how the activity in counts per minutes (c. p. m) of 1.00g of processed carbon…

A: (i) According to the graph initial activity of 16 c.p.m is reducing to 8 c.p.m in 5000 years( as…

Q: A 6.2 mg sample of 90Sr (half-life 29.12 y) is in secular equilibrium with its daughter 90Y…

A: a) At equilibrium        λsrNsr = λyNy              Nsr = λyNyλsr                     = 29.12y365…

Q: 2) What is the activity of a 1 gram sample of 1? (t12 = 3.38 x 10' seconds)

A:

Q: To measure the volume of the blood system of an animal, the following experiment was done. A 1.0-mL…

A: Let the volume of the blood be V. The initial total volume of the blood is 1+V. Since the activity…

Q: Iodine-125 is radioactive and has a half life of 60.25 days. Calculate the activity of a 4.2 mg…

A:

Q: A sample of cobalt-60 (t1/2 = 5.27 yr), a powerful g emitter used to treat cancer, was purchased by…

A: All radioactive decay processes follow first order reactions. Calculating rate constant for first…

Q: Write the equations for the following examples of nuclear decay: a) α emission by Bi 83 193 c) ß+ by…

A:

Q: A radioactive isootope of copper decays as follows: 64Cu -> 64Zn + 0-1β  t1/2 = 12.8 h…

A: given: radioactive isootope of copper      64Cu -> 64Zn + 0-1β  find: the quantiity of 64Zn…

Q: Iodine-125 is radioactive and has a half life of 60.25 days. Calculate the activity of a 5.2 mg…

A:

Q: For samples 1, 2 and 3: A. determine the D/P ratio in the table below (calculate each value to 1…

A: As per rule, only the first question can be answered. Decay constant (λ) = 5.543 x 10-10 year-1 1…

Q: O See Hint If exactly 1.00 ug of 226Ra was used to paint the glow-in-the-dark dial of a wristwatch…

A: Given, mass of R226a = 1μg half life of R226a,t12=1.60×103 yr

Q: Indium-116 is radioactive and has a half life of 14.10 seconds. Calculate the activity of a 5.7 mg…

A: activity of radioactive substance is proportional to number of radioactive particles. λ = 0.693 /…

Q: What is the binding energy in kJ/mol nucleons for lanthanum-138? kJ/mol nucleons 57 H+ 81,n- The…

A:

Q: Calculate the nuclear binding energy in mega-electronvolts (MeV) per nucleon for Tl203Tl203.…

A: Nuclear mass of Tl = 202.972 amu Mass of protons, mp = 1.00728 amu Mass of neutrons, mn = 1.00867…

Q: Silicon-32 is a beta emitter with a half-life of 650.0 years. How long would it take for a 8.00g…

A:

Q: A sample of cobalt-60 (t1/2=5.27 yr), a powerful γ emit-ter used to treat cancer, was purchased by…

A: Half life of radioactive element-is the time needed for given number of its nuclei to decay exactly…

Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 1.3 mg…

A:

Q: 2. The sample of 355, is a - emitter, has an activity of 0.100 μCi. In 20.0 days, the activity of…

A: radioactive disintegration follow first order kinetics

Q: How long would it take for 85% of 131I to decay? [ Half-life of 13!I is 8.04 days]

A: Since you have asked multiple questions, we will answer first question for you. In order to get…

Q: 24Na (k = 0.0462/hr)? %3D What would be the activity in Curies of a 50 mg sample of

A: Given data Mass of Na = 50 mg Rate constant value: We know that following Atomic mass of Na = 22.9…

Q: Technetium-99m (gamma emitter, t1/2 = 6.02 hr) is widely used for diagnosis in medicine. A sample…

A: [Ao] = 4.52 × 10-6  t1/2 = 6.02 hr

Q: kg

A: Nuclear binding energy is the energy required to split the nucleus of an atom into its components

Q: (a) If exactly 1.00 μg of 226Ra was used to paint the glow-in-the-dark dial of a wristwatch made in…

A: Given, mass of R226a= 1.00 μg time span , t =(1955-1914)=41 yr t1/2=1.6×103 yr

Q: Before 1900 the activity per unit mass of atmospheric carbon due to the presence of 14C averaged…

A: It is known that the half-life of 14C is 5730 yr

Q: Americum-241 is widely used in smoke detectors. Calculate the amount of Americum-241 consumed in a…

A:

Q: Radium-226 is radioactive and has a half life of 1600. years. Calculate the activity of a 2.1 mg…

A:

Q: A 25.0-mL sample of 0.050 M barium nitrate solution wasmixed with 25.0 mL of 0.050 M sodium sulfate…

A: (a)

Q: If exactly 1.00 µg of 22°Ra was used to paint the glow-in-the-dark dial of a wristwatch made in…

A: mass of substance is 1μg atomic mass =226 Disintegration = (mass/atomic mass)x Na x log2/t1/2…

Q: List the six stages in the nuclear fuel cycle. Which stage(s) of the nuclear fuel cycle does…

A: Interpretation: 1. To list six stages in the nuclear fuel cycle 2. To which stage of the nuclear…

Q: how much of the 111In111In will be active 15 daysdays after the injection is given?

A: The rate of a reaction is determined as the change in concentration of the reactants or the products…

Q: V. (FREE) R&B x Trapsoul Type X 404 - File or directory not fo x OWLv2 Online teaching an X…

A:

Q: Sodium-24 (ty = 15h) is used to study blood circulation. If a patient is injected with aqueous…

A: The activity use the first order formula , we can calculate it for 4 days.

Q: 1. The half-life of Ga-67 is 77.9 hours. How long will it take Ga-67 to decay and lose 95% of its…

A:

Q: Be sure to answer all parts.   If a 520. mg sample of technetium−99m is used for a diagnostic…

A:

Q: A sample of the inner part of a redwood tree felled in 1874 was shown to have 14C activity of 9.31…

A: The integrated rate law of first order is shown below: Where; A = final activity A0 = initial…

Q: A sample of 16? 35 , a ß-emitter, has an activity of 0.100 μCi. In 20.0 days, the activity of…

A: Radioactive follows first order kinetics, If λ is the disintegration constant, t is time at which…

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 1.9 mg…

A:

Q: Calculate the specific activity (in C/g) and the decay constant (in sec') for a 10g sample of…

A: Given the mass of the radioactive sample = 10 g  Activity of the sample = 3.08*1015  particles per…

Q: What type of decay would you expect tritium, 3H to undergo? Write the nuclear equation for the…

A:

Q: All the disintegrations of a sample of an unknown nuclide weighing 4.6 x 10-2 g were counted. In the…

A:

Q: The question is: The activity of Arsenic-76 after 157.8 hrs is 120.2 micro milicuries. What was the…

A: The activity depends on the no of atom present in the sample .

Q: Fluorine-18 used in PET scans has a half-life of 110 min. If a 100.0 mg sample of the radioisotope…

A:

Q: part 1: If exactly 1.00 μg of 226Ra was used to paint the glow-in-the-dark dial of a wristwatch made…

A: Use this relationship to solve for NtlnNtNo = -0.693 tt1/2 No = 1.00 μg t1/2 = 1.60x103 years…

Q: How long can a 54-lb child be exposed to 1.0 mCi of radi-ation from 222Rn before accumulating 1.0…

A: Given data contains, Weight of the child is 54 lb. Quantity of radiation absorbed is 1.0 mrad.…

Q: 3) Calculate the change in energy in J and Mev if 5 mol of Nitrogen -14 (14.0031 amu) nuclei were…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: What is the binding energy in k]/mol nucleons for chlorine-35? kJ/mol nucleons 17 H+ 18,n→C1 The…

A:

Q: Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 6.7 mg…

A:

Q: What is the binding energy in kJ/mol Cu for copper-65? kJ/mol 29;H+ 36,n Cu 65 The required masses…

A: Given-> Atomic mass of Cu = 64.92780 gm/mole Mass of proton = 1.00783 gm/mole Mass of neutron =…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.