Give some applications of Mass spectrometry.
Q: An accident in a laboratory results in a room being contaminated by a radioisotope with a half-life…
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Q: The activity of this sample after 3 half-lives have elapsed is approximately what?
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Q: radioactive
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Q: 62 U) decays into a thorium nucleus ( Th) and another particle, as shown in A uranium nucleus the…
A: According to the law of Conservation of Nuclear Number, the sum of protons and neutrons among…
Q: How were X-rays first discovered?
A: X- rays were first discovered by Wilhelm Rontgen in 1895 by accident. He was working with cathode…
Q: Which of the following is a form of natural radioactivity that would be deflected by a magnetic…
A: Anything that contains charge will experience magnetic force when it passes magnetic field. X rays…
Q: Calculate the nucelar radius of uranium-238.
A: The destiny of a nucleus does not depend on the mass number A. Very light nuclei and heavy nuclei…
Q: The age of the Dead Sea Scrolls was found by carbon dating. Could this technique apply if they were…
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Q: Explain the working principle of a Geiger tube.
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Q: What kind of rays are X-rays?
A: X-rays are electromagnetic radiations. X-ray photons are highly energetic.
Q: Suggest two ways in which the accuracy of the experiment (counter next to radioactive substance)…
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Q: Calculate the mass defect and the binding energy of the deuterium
A: We know: Mass of hydrogen, MH=1.007941 amu Mass of proton, MP=1.007941 amu Mass of neutron,…
Q: QUESTION 32 Which of the following atomic spectrometry techniques has generally the highest…
A: Spectroscopy techniques deals with the infrared region of the electromagnetic spectrum, i.e. light…
Q: At a distance of 100cm, the exposure from a radioactive substance is measured at 450mR. What will…
A: Radioactive materials give off a form of energy that travels in waves or particles. This energy is…
Q: 1. The mass difference between two isotopes is sometimes just a neutron mass. The spectrometer…
A: The direction of the magnetic field produced by the solenoid at any point inside the solenoid is…
Q: When a cyclotron shifts from deuterons to alpha particles it is necessary to drop the magnetic field…
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Q: Describe the key properties required of radioisotopes used for i) medical imaging (gamma camera, PET…
A: Radioisotopes: The nuclei of radioactive isotopes are unstable and disintegrate at random, resulting…
Q: Please give a brief explanation of how X-rays were discovered and how they are produced
A: Explanation of how X-rays were discovered and how they are produced.
Q: What is mass defect?
A: When a nucleus is formed, some of the mass is converted to energy and this results in the mass…
Q: Explain how a nuclear EMP is produced.
A: The most important mechanism for Electromagnetic Pulse (EMP) production from a nuclear detonation is…
Q: What is Secondary-ion mass spectrometry (SIMS)?
A: Secondary ion mass spectrometry is a surface analysis process known as SIMS, in which ions are…
Q: A radioactive substance decays and the emitted particle passes through a uniform magnetic field…
A: According to the right-hand rule, the positive charge will deflect to the left while the negative…
Q: Polonium 219 emits a beta particle. What element results and what is its mass number?
A: The emission of beta particle results in the original mass number remaining same and the atomic…
Q: radioactive isotope decays into thorium-232 and an alpha particle. What was the original particle
A: Total atomic number and mass number should be equal to both sides of equation.
Q: What are x-rays used for?
A: Given: X rays
Q: What speed must an alpha particle maintain if it is to remain suspended, relative to Earth's…
A: We can use the concept of magnetic force acting on a charged particle moving perpendicular to a…
Q: Is carbon dating appropriate for measuring the age of materials that are a few years old? A few…
A: Carbon dating is best suited for a few thousand years as the half-life of carbon 14 is 5000 years.
Q: What characteristic of atom can be measured with mass-spectrometer?
A: Massof atom is measured with the help of mass spectrometer.
Q: Question 6 a) Explain the general advantages in the use of radiopharmaceuticals for treatment as…
A: Radiopharmaceuticals are radioactive substances that are administered to patients for medical…
Q: 7. The half life of Thorium is 75,000 years. How much of a 635 gram sample will be left after…
A: Half life of Thorium is , T1/2 = 75000 years Initial Quantity , N0 = 635 gram Time elapsed , T =…
Give some applications of Mass spectrometry.
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- The mass difference between two isotopes is sometimes just a neutron mass. The spectrometer should separate them very well. For such an isotope combination, the difference in radius should be around 1 cm. That is r2 - ri = 1 cm. In order to achieve this, choose a magnetic field with a magnitude in Tesla (maximum magnetic field you can obtain from a conventional magnet is around 2.5 T so be far away from this value) and choose the direction also. Then determine the velocity of isotope you need. Last calculate radius r of a Pbz04 smallest isotope.Which ions of like charge and equal speed are least deflected in a mass spectrometer?A certain radioisotope has a half-life of 8.96 days. What percentage of an initial sample of this isotope remains after 25 days? Number i Units