A nuclear reactor produces 40.0 kg of uranium-232. If the half-life of uranium-232 is about 70...
6) Pu-239 is produced in the nuclear fuel cycle in nuclear power plants. The half-life of Pu- 239 is 24,000 years. If 500.0mg of Pu-239 are generated this year, how much will remain this month in the year 2683? (2 points) a. b. How much of the original 500.0 mg of Pu-239 will be left after 6 half-lives? (2 points) 7) Polonium-210 has a half-life of 140 days. How long will it take for a sample of 385g of Polonium-210...
In a nuclear reactor, each atom of uranium (of atomic mass 235 u) releases about 200 MeV when it fissions. What is the change in mass when 1.30 kg of uranium-235 is fissioned? Answer in Kg
(d) Due to alpha decay, l mole of uranium-238 produces 2.96 106 alpha particles per second. Find the half-life, giving your answer in units of years. [5 marks] (e) The average mass of the atoms in a 0.100 kg block of pure carbon is 12.01 u. A small fraction of the atoms are radioactive, with a decay constant of 3.90 x 10-12s. If the activity of the carbon block is 97.8 Bq, calculate what fraction of the atoms are radioactive...
Even when shut down after a period of normal use, a large commercial nuclear reactor produces heat at the rate of 142 MW by the radioactive decay of fission products. This causes a rapid increase in temperature if the cooling system fails (a) Calculate the rate of temperature increase in degrees Celsius per second (°C/S), if the mass of the reactor core is 1.60 x 10° kg and has an average specific heat of 0.0800 kcal/(kg·°C) oC/s (b) How long...
Examples 1. Ura nium 233 has a half-life of about 70 years. If an area is contaminated with this compound, how long will it take o reach less than 5% of its original concentration? Round to the nearest number.
You are dating Moon rocks based on their proportions of uranium-238 (half-life of about 4.5 billion years) and its ultimate decay product, lead. a)Find the age for a rock for which you determine that 59% of the original uranium-238 remains, while the other 41% has decayed into lead. b)Find the age for a rock for which you determine that 71% of the original uranium-238 remains, while the other 29% has decayed into lead.
Uranium-235 has a half-life of 7.04 x 108 years. How many years will it take for 99.9% of a U.235 sample decay A. 7.08 105 yr B. 1.0 x 106 yr C. 4.7 x 10º yr D.4.9 x 109 yr * E. 7.08 109 yr
Even when shut down after a period of normal use, a large commercial nuclear reactor produces heat at the rate of 162 MW by the radioactive decay of fission products. This causes a rapid increase in temperature if the cooling system fails. Answers are NOT 12650 and 0.181 for #1. Even when shut down after a period of normal use, a large commercial nuclear reactor produces heat at the rate of 162 MW by the radioactive decay of fission products....
Indium-116 is radioactive and has a half life of 14.10 seconds. How long would it take a sample to decay from 7.70 mg to 900. g. Round your answer to 2 significant digits. x 5 ? O NUCLEAR AND ORGANIC CHEMISTRY Writing the equation for a typical radioactive decay The sodium-22 nuclide radioactively decays by positron emission. Write a balanced nudear chemical equation that describes this process 0- x Y ? 5 Explanation Check © 2020 MOGE AR Type here...
1. The half-life of carbon-14 is 5730 years. A sample is found to have one-eighth the original amount of carbon-14 in it. How old is the sample? 5730 years, 716 years, 45800 years, 17200 years 2. Why wouldn't you use carbon-14 dating on a piece of shell that was estimated to be 1 million years old? Sea shells do not have radioisotopes, carbon dating is only useful on plants, uranium dating is better for items older than 1/2 million years,...