Determine the amount of 210Po necessary to provide a source of a-particles 84 of 10 millicuries strength. Half life of Polonium = 138 D.
Q: A radioactive material has a half-life of 2.5 hours. The activity of a sample was measured to be 375…
A:
Q: The radioactive nuclide Plutonium-199 has a half-life of 43.0 min. A sample is prepared that has an…
A:
Q: The number of radioactive atoms in a sample decay as the emission of radiation proceeds and this may…
A:
Q: Q41. A radioactive source has a half-life of 20 days. Calculate the activity of the source after 70…
A:
Q: A 5000-Ci 60Co source used for cancer therapy is considered too weak to be useful when its activity…
A: Basic Details The ratio of the activity depends on the decay constant and the time taken.
Q: Att=0, a radioactive sample contains 3.50 ug of pure 11 "C, which has half-life of 20.4 min. The…
A:
Q: A 4.3 x 1014 Bq source of 60Co is used for cancer treatment. Each disintegrating nucleus emits two…
A: The activity of a radiactive sample is given by the formula, A=λNλ=disintegration constantN=Number…
Q: The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy…
A:
Q: A radioactive sample with a half life of 4.8 weeks has 3.05e+15 nuclides present in the initial…
A:
Q: A 0.01 cm thick gold plate is bombarded for 10 minutes with a thermal neutron beam with a flux of…
A:
Q: Rutherfordium-261 has a half-life of 1.08 min. What is the decay constant of rutherfordium?…
A: Half life = The relation between the decay constant and the half life is given below:
Q: The mass of a Beryllium nucleus (Be) is 1.1652 x 1026 kg. Vhat is the mass defect of the beryllium…
A: (4,7)Be has 4 protons and 7-4 =3 neutrons. mass defect of Be = difference between the total mass of…
Q: (Hand by written ans.)Mantles for gas lanterns contain thorium, because it forms an oxide that can…
A:
Q: Use the values from PRACTICE IT to help you work this exercise. (a) Find the number of remaining…
A:
Q: A sample of a radioactive isotope with a decay constant of λ = 4.27 × 10-3 s-1. A sample of the…
A: we know activity R =λN where λ = decay constant N = number of particle given N = 2.68 × 1015…
Q: The radioactive isotope 234pa has a half-life of 6.70 h. A sample containing this isotope has an…
A:
Q: The physical half-life of 113m/n (Indium isotope) is 1.7 hours. The init sample has 1.07×1016 atoms…
A: We have givenT1/2=1.7 hInitial number of atoms= N0=1.07×1016atomsInitial mass (m)=2μg
Q: A certain isotope has a half-life of 6.4 h and an atomic mass of 87.29 u. What will the activity in…
A:
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: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…
A: Given, The half-life, t1/2=1.405×1010 year The mass of the thorium, m=230×10-3 g The molecular mass,…
Q: 4⁰K is an unusual isotope, in that it decays by negative beta emission, positive beta emission, and…
A:
Q: A radioactive sample has an activity of 250 Bq and contains 6.52×10¹³ radioactive nuclides. Estimate…
A: The rate at which this decay takes place in a given sample of radioactive material is called its…
Q: You have an istope with a decay constant of 2.48x10-³s-¹. What is the half life of isotope?
A:
Q: A 5000-Ci ⁶⁰Co source used for cancer therapy is considered too weak to be useful when its activity…
A: Basic Details The ratio of the activity is an exponential function of decay activity and the time…
Q: The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy…
A: Let t1/2 denote the half-life of the given isotope of Curium and λ denotes the decay constant of the…
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: The Curiosity rover sent to explore the surface of Mars has an electric generator powered by heat…
A:
Q: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…
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: Plutonium has a decay constant of 2.75 x 10-16 s-1. Suppose we had a 1.00 g sample what will be its…
A: Radioactive decay is the process by which unstable nuclei spontaneously lose energy to become…
Q: A patient is injected 465 MBq of radioactive isotopes with a half life of 110 minutes. How much…
A: Given: Half life, T=110 min=6600 s Radioactive injected in a body, N0=465 MBq Let's find the…
Q: Complete the radioactive decay equation: 31,4Si -> 3115P + ? a. 4He
A: For the reactant 31 14Si of the decay reaction, the atomic number is 14 and the mass number is 31.…
Q: The half-life for the a decay of uranium 2U is 4.47 x 10° yr. Determine the age (in years) of a rock…
A:
Q: A radioactive sample with a half-life of 5.3 weeks has 1.04e+15 nuclides present in the initial…
A:
Q: The radioactive isotope Gold -198 has a half of 64.80hours. A sample containing this isotope has an…
A: The initial activity is given by,
Q: Unit When aboveground nuclear tests were conducted, the explosions shot radioactive dust into the…
A:
Q: Tritium has a half-life of 12.3 years. Suppose there are initially 1.0 x 10^12 tritium atoms. (a)…
A: An unstable radioactive nucleus decays to a more stable configuration and this process is known as…
Q: building has become accidentally contaminated with radioactivity. The longest-lived material in the…
A: Answer is 1685.2 years
Q: The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy 6.1…
A:
Q: A sample of ??2045, a ?- emitter, has an activity of 0.1000 μCi. In 60.0 days, the activity of the…
A:
Q: A 5000-Ci60Co source used for cancer therapy is considered too weak to be useful when its activity…
A: The ratio of the activity is an exponential function of decay activity and the time period. The time…
Q: What is the activity (in particles/s) of a sample of Carbon-14 that contains 9.070E+21 nuclei?
A: Half life of C-14 (t1/2) = 5730 years N = 9.070 x 1021 As we know, Activity (A) = 0.693 N/t1/2…
Step by step
Solved in 2 steps with 2 images
