Homework Answers
Wachtelite with higher boiling point and radioactive in nature is most usefull in age determination.
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3. A radioactive substance Zevonium decays into 4 different daughter products, Wachtelite Kunkelate. Calderonium, a...
5. Viscite, is a radioactive substance that decays into Rottenium and Jonesium ( 2 units of...
5. Viscite, is a radioactive substance that decays into Rottenium and Jonesium ( 2 units of Viscite decays into 2 unit of Rottenium and 1 units of Jonesium): Vissite has a half-life of 3 million years. We find a rock that contains 40 units of Viscite, 100 units of Rottenium and 20 units of Joncsium, Rottenium has a boiling point of 1500 °C and Jonesium has a boiling point of -97Chow old is the rock?
Radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is A(t)=100(1.6)^(-t)
Radioactive substance decays so that after t years, the amount remaining, expressed as a percent of the original amount, is A(t)=100(1.6)^(-t). a) Determine the function A’, which represent the rate of decay of the substance. b) what is the half-life for this substance? c) what is the rate of decay when half the substance has decayed?
3. [4 pts) This question contains 3 parts. A radioactive isotope decays such that 1/8 is...
3. [4 pts) This question contains 3 parts. A radioactive isotope decays such that 1/8 is left after 8 years. What fraction of the original amount would be left after a total of 16 years? (There is no need to deduce the half-life) 01/16 (ii) 1/24 (iii) 1/32 (iv) 1/64 (v) 1/128 Describe, or show, how you arrived at this answer. If 1/8 was left after 4 years, what would be left after 16 years?
1. What are five types of radioactive decay studied in this unit? What is the "byproduct"...
1. What are five types of radioactive decay studied in this unit? What is the "byproduct" for each decay type (in addition to the daughter nucleus)? Alpha Radiation: Beta Radiation: Gamma Radiation: Positron Emission: Electron Capture: 2. Which of the following could we use to predict if a nucleus is stable? A. The number of protons = the number of neutrons if Z<=20 B. It has an even number of protons and neutrons. C. It has an odd number of...
3) An alpha particle can be produced in certain radioactive decays of nuclei and consists of...
3) An alpha particle can be produced in certain radioactive decays of nuclei and consists of two protons and two neutrons. The particle has a charge of q = +2e and a mass of 4.00 u, where u is the atomic mass unit, with 1 u = 1.661 × 10 2'kg. Suppose an alpha particle travels in a circular path of radius 4.50 cm in a uniform magnetic field with B-1.20 T. Calculate (a) its speed, (b) its period of...
22. Consider the case of a radioactive element X which decays by electron (beta) emission with...
22. Consider the case of a radioactive element X which decays by electron (beta) emission with a half-life of 4 days to a stable nuclide of element Z. Which of the following statements is CORRECT? (a) After 8 days the sample will consist of one-fourth element Z and three-fourths element X. (b) Element Z will weigh exactly the same as element X when decay is complete (weighed to an infinite number of significant figures). (c) 2.0 g of element X...
Please include all working, i'll give a thumbs up. Thank you. 4. When a radioactive element...
Please include all working, i'll give a thumbs up. Thank
you.
4. When a radioactive element decays, it is because the balance of neutrons and protons inside the nucleus was unstable. Explain what happens in each of these kinds of decay to make the nucleus more stable (these are the three most common decay types): a. Fission b. Beta-decay (B) C. Alpha-decay (a) Which of these is more often associated with the production of energy (and weapons)? Why do you...
Using Python 3... Question 4: Carbon dating (3 points) Archaeologists use the exponential, radioactive decay of...
Using Python 3...
Question 4: Carbon dating (3 points) Archaeologists use the exponential, radioactive decay of carbon-14 to estimate the death dates of organic material. The stable form of carbon is carbon-12, and the radioactive isotope carbon-14 decays over time into nitrogen-14 and other particles. Carbon is naturally in all living organisms, and the carbon-14 that forms in the upper atmosphere enters into living things as long as they are taking in material (food, air, etc.) that contains carbon. We...
Question 14 4 pts In which substance does bromine have an oxidation number of +1? A)...
Question 14 4 pts In which substance does bromine have an oxidation number of +1? A) Br2 B) HBrO C) HBrO2 D) HBr OB OC OD ОА 4 pts Question 15 Identify the place which has the highest boiling point of water.
Question 6. Please show your working for all questions. (a) If a radioactive nuclide decays for...
Question 6. Please show your working for all questions. (a) If a radioactive nuclide decays for an interval of time equal to 4 times its half-life, what fraction of the original activity remains ? (b) A researcher is doing an experiment with a cell culture to image the DNA. To do so, the researcher applies ethidium bromide (EtBr) to the culture. After preparation, 50% of the EtBr has bound to DNA and 50% is in free solution. Imaging is done...
5. Viscite, is a radioactive substance that decays into Rottenium and Jonesium ( 2 units of Viscite decays into 2 unit of Rottenium and 1 units of Jonesium): Vissite has a half-life of 3 million years. We find a rock that contains 40 units of Viscite, 100 units of Rottenium and 20 units of Joncsium, Rottenium has a boiling point of 1500 °C and Jonesium has a boiling point of -97Chow old is the rock?
3. [4 pts) This question contains 3 parts. A radioactive isotope decays such that 1/8 is left after 8 years. What fraction of the original amount would be left after a total of 16 years? (There is no need to deduce the half-life) 01/16 (ii) 1/24 (iii) 1/32 (iv) 1/64 (v) 1/128 Describe, or show, how you arrived at this answer. If 1/8 was left after 4 years, what would be left after 16 years?
3) An alpha particle can be produced in certain radioactive decays of nuclei and consists of two protons and two neutrons. The particle has a charge of q = +2e and a mass of 4.00 u, where u is the atomic mass unit, with 1 u = 1.661 × 10 2'kg. Suppose an alpha particle travels in a circular path of radius 4.50 cm in a uniform magnetic field with B-1.20 T. Calculate (a) its speed, (b) its period of...
22. Consider the case of a radioactive element X which decays by electron (beta) emission with a half-life of 4 days to a stable nuclide of element Z. Which of the following statements is CORRECT? (a) After 8 days the sample will consist of one-fourth element Z and three-fourths element X. (b) Element Z will weigh exactly the same as element X when decay is complete (weighed to an infinite number of significant figures). (c) 2.0 g of element X...
Please include all working, i'll give a thumbs up. Thank
you.
4. When a radioactive element decays, it is because the balance of neutrons and protons inside the nucleus was unstable. Explain what happens in each of these kinds of decay to make the nucleus more stable (these are the three most common decay types): a. Fission b. Beta-decay (B) C. Alpha-decay (a) Which of these is more often associated with the production of energy (and weapons)? Why do you...
Using Python 3...
Question 4: Carbon dating (3 points) Archaeologists use the exponential, radioactive decay of carbon-14 to estimate the death dates of organic material. The stable form of carbon is carbon-12, and the radioactive isotope carbon-14 decays over time into nitrogen-14 and other particles. Carbon is naturally in all living organisms, and the carbon-14 that forms in the upper atmosphere enters into living things as long as they are taking in material (food, air, etc.) that contains carbon. We...
Question 14 4 pts In which substance does bromine have an oxidation number of +1? A) Br2 B) HBrO C) HBrO2 D) HBr OB OC OD ОА 4 pts Question 15 Identify the place which has the highest boiling point of water.
Question 6. Please show your working for all questions. (a) If a radioactive nuclide decays for an interval of time equal to 4 times its half-life, what fraction of the original activity remains ? (b) A researcher is doing an experiment with a cell culture to image the DNA. To do so, the researcher applies ethidium bromide (EtBr) to the culture. After preparation, 50% of the EtBr has bound to DNA and 50% is in free solution. Imaging is done...
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