Alpha Decay (Emission)Beta Decay (Emission)220 Fr→ 'a +At16 N216°B+ 08785What are the products of francium-200 decay above?What are the products of nitrogen-16 decay above?220F.+ 216At16 NB+"0S785

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Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter2: Chemistry Of Life

Section: Chapter Questions

Problem 1ACQ: Figure 2.3 How many neutrons do (K) potassium-39 and potassium-40 have, respectively?

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Polonium is a rare element with 33 radioisotopes. The most common one, 210Po, has 82 protons and 128 neutrons. When 210Po decays, it emits an alpha particle, which is a helium nucleus (2 protons and 2 neutrons). 210Po decay is tricky to detect because alpha particles do not carry very much energy compared to other forms of radiation. For example, they can be stopped by a single sheet of paper or a few inches of air. That is one reason that authorities failed to discover toxic amounts of 210Po in the body of former KGB agent Alexander Litvinenko until after he died suddenly and mysteriously in 2006. What element does an atom of 210Po become after it emits an alpha particle?
The decay of an isotope element follows a first-order reaction. Assuming that you start with 964 mg of the isotope element sample, after 39.4 hours of decay, you find that there is 275 mg of the sample remaining. What is the half-life time of this reaction?
a 139 ng sample of radioactive material has a half life of 4.2 days how many ng of radioactive material is left after 3 half lives ?
Explain how the type of decay, the half life and the chemical properties make the following radionuclides suitable for the given applications: A single gram of polonium will reach a temperature of 500°C making it useful as a source of heat for space equipment (α emitter, half lives of polonium isotopes range from less than a second to 200 years).
If there is 10 μmol of the radioactive isotope 32P (half-life 14 days) at t = 0, how much 32P will remain at (a) 7 days, (b) 14 days, (c) 21 days, and (d) 70 days?
A 10.00 mg sample of technetium-93 (92.91024898 u) is used to heat 125.4 g of water from 23.4 degree C to 87.4 degree C. How many minutes will be required to heat the water if all of the energy generated from the decay is used to heat the water?
Define the terms belowi. Radioisotopeii. Decay seriesiii. Radioactive decay energy and its unitsiv. Decay constantv. Scintillation cocktailvi. Counts per minutevii. List the events that lead to the detection of radioactivity in a liquid scintillationcounter.
What is the unknown isotope in the following fission reaction: n + 235U → 131I + ? + 3nA. 86Rb B. 102Rb C. 89Y D. 102Y
Radioactivity is a phenomenon of the spontaneous emission of: A. protons (alpha particles) B. electrons (beta particles) C. gamma rays (short wave electromagnetic waves) D. All of the above
How can a nucleus emit an electron during B decay when there are no electrons present in the nucleus to begin with?
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Alpha Decay (Emission) Beta Decay (Emission) 220 Fr OL a + 216 At 16 N → B+ "O 87 85 What are the products of francium-200 decay above? What are the products of nitrogen-16 decay above? N B+ "0 220Fr a + 216A.