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- E2.11:The Binding Energy: Calculate the following problems using the energy and mass equivalence formula. a Calculate its binding energy per atom in millions of electron volts. b. Calculate its binding energy per nucleon. 1. The mass of the atom Fluorine (F) is 18.99840 amu. - Calculate the Binding energy of 2.5 mole of Plutonium-238 if it has a mass of 237.98931 amu. E. Half Life and Radioactivity: . 190 grams of the isotope TI-208 undergoes B decay with a half-life of 3.1 min. a. What isotope is produced by the decay? b. How long will it take for 99.0% of a sample of pure TI-208 to decay? - "1g of Ra-226, produces 0.0001 mL of the gas Rn - 222 at STP (Standard temperature and pressure) in 24 hours, what is the half-life of Ra-226 in years? 2 *1034 3. Arsenic - 70 has a half life of 140 days. If there are 156 kg of this sample how much of As - 70 will remain after 13.5 hours. 4. Te - 105 has a half life of 203.9 hours. If there are 1054 g of Te- 105 initially, how long will it take for 500…The half life of a certain element is about 5600 years. Use the radioactive formula to complete parts a and b. a. A pice of cloth is painted with organic dyes. By analyzing the dye in the cloth, it is found that only 64% of the certain element remains. When was the cloth painted? b. A well preserved piece of wood found at a site has 12.9% of the certain element that it must have had when it was alive. Estimate when the wood was cut.
- 1. A silver bullet used to kill vampires in the late 19th century was found to be suspended in a constant temperature enclosure. It is found that the silver bullet's tempearture cools from 100°C to 90°c in 5 minutes and 82°C in the next five minutes. Calculate the temperature of the enclosure.ApplitulDN. (9 MUPRS) 3. Strontium-90 is used in machines that control the thickness of paper during the manufacturing process. Strontium-90 has a half-life of 28 years. After 840 days, approximately how much of the original 1200g sample remains? Round to the nearest whole number. sin LÁTEX sans LATEX free. h A = A, 2. STUDIO AL Ao Elapsed time Half life of isotope Amount of the isotope left Original amount of the isotope hUse the table to the right to answer the following question. How many kilograms of combustible sedimentary rock would be required to supply the energy needs of country A for 1 year? Item Energy released by burning 1 kg of a certain combustible sedimentary rock Energy (joules) 1.6x 10° nts Energy released by fission of 1 kg of a certain isotope 5.6x 1013 7x 10 1x 1021 4x 1020 al Energy released by fusion of hydrogen in 1 liter of water Country A annual energy consumption Country B annual energy consumption It would take approximately kilograms. ess (Use scientific noteipn. Use the multiplication symbol in the math palette as needed. Round to three decimal places as needed.)
- . The half-life of palladium-100 is four days. (So half of any given quantity willdisintegrate in four days.) The initial mass of a sample is one gram.a. Find the mass that remains after 16 daysQ1) A radioactive isotope has a half-life of 16 days. You wish to have 30 g at the end of 30 days. How much radioisotope should you start with?a) a sample of iodine-131 has a weight of 3 mg and a half life of approximately 8 days. how much of the sample will remain after each number of days? match the correct amount of the sample to the time in days.
- Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 80 grams, how long would it be until the mass of the sample reached 61 grams, to the nearest tenth of a year? Answer: Submit Answer attempt i out of 2 NG 5 8. pPlants convert carbon dioxide (CO₂) in the atmosphere, along with water and energy from sunlight, into the energy they need for growth and reproduction. Experiments were performed under normal atmospheric air conditions and in air with enriched CO₂ concen- trations to determine the effect on plant growth. The plants were given the same amount of water and light for a four-week period. The following table gives the plant growths in grams: Normal Air: 4.67 4.21 2.18 3.91 4.09 5.24 2.94 4.71 4.04 5.79 3.80 4.38 Enriched Air: 5.04 4.52 6.18 7.01 4.36 1.81 6.22 5.70 On the basis of these data, we want to determine the effect of CO2-enriched atmosphere on plant growth. Let X be the plant growth in enriched air and Y be the plant growth in normal air. Assume X, Y are normal with mean x, y respectively, but we don't know their variances. µx (i) Construct a 95% (two-sided) confidence interval for px - y by discarding the last four data from the larger sample and then pair up the rest of the two…The half-life of Radium-226 is 6 years. How much of an initial 178 g sample will remain after 23 years? O 12.49 O 12005.63 O 2.64 O 2537.28 O 213.28