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ChemistryChemistry & Chemical Reactivity(a) A sample of Ca 3 (PO 4 ) 2 containing phosphorus-32 has an activity of 3.35 × 10 3 dpm Exactly 2 days later, the activity is 3.18 × 10 3 dpm. Calculate the half-life of phosphorus-32 (b) A highly radioactive sample of nuclear waste products with a half-life of 200, years is stored in an underground tank. How long will it take for the activity to diminish from an initial activity of 6.50 × 10 12 dpm to a fairly harmless activity of 3.00 x 10 3 dpm?(a) A sample of Ca 3 (PO 4 ) 2 containing phosphorus-32 has an activity of 3.35 × 10 3 dpm Exactly 2 days later, the activity is 3.18 × 10 3 dpm. Calculate the half-life of phosphorus-32 (b) A highly radioactive sample of nuclear waste products with a half-life of 200, years is stored in an underground tank. How long will it take for the activity to diminish from an initial activity of 6.50 × 10 12 dpm to a fairly harmless activity of 3.00 x 10 3 dpm?
BuyFindlaunch
Chemistry & Chemical Reactivity
10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074
BuyFindlaunch
Chemistry & Chemical Reactivity
10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074
Solutions
Chapter
Section
Chapter 25.4, Problem 25.6CYU
Textbook Problem
- (a) A sample of Ca3(PO4)2 containing phosphorus-32 has an activity of 3.35 × 103 dpm Exactly 2 days later, the activity is 3.18 × 103 dpm. Calculate the half-life of phosphorus-32
- (b) A highly radioactive sample of nuclear waste products with a half-life of 200, years is stored in an underground tank. How long will it take for the activity to diminish from an initial activity of 6.50 × 1012 dpm to a fairly harmless activity of 3.00 x 103 dpm?
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Chemistry & Chemical Reactivity
Ch. 25.2 - (a) Six and four particles are emitted in the...Ch. 25.2 - Indicate the symbol, the mass number, and the...Ch. 25.3 - Write an equation for the probable mode of decay...Ch. 25.3 - Calculate the binding energy per nucleon, in...Ch. 25.4 - Tritium (13H), a radioactive isotope of hydrogen,...Ch. 25.4 - (a) A sample of Ca3(PO4)2 containing phosphorus-32...Ch. 25.4 - A sample of the inner part of a redwood tree...Ch. 25.5 - Technetium is one of the two elements with atomic...Ch. 25.8 - To measure the solubility for PbCrO4 you mix a...Ch. 25.8 - There are two major isotopes of uranium, 235U...Ch. 25.8 - Rates of decomposition can be measured based on...Ch. 25.8 - Uranium-235 is an alpha emitter. Write an equation...Ch. 25.8 - Calculate the molar mass (atomic weight) of...Ch. 25.8 - Write an equation for the decay of 99Mo to 99Tc.Ch. 25.8 - What is the oxidation number of Tc in the...Ch. 25.8 - What amount of NaTcO4 is there in 1.0 g of the...Ch. 25.8 - If you have 1.0 g of Tc, what mass remains at the...Ch. 25.8 - 99Tc decays to 99Ru. What particle is produced in...Ch. 25.8 - Speculate on the reason the TcO4 ion is held less...Ch. 25.8 - Write a balanced equation for the radioactive...Ch. 25.8 - The decomposition of 87Rb occurs by which of the...Ch. 25.8 - Determine the rate constant for the radioactive...Ch. 25.8 - The oldest dated meteorites have ages of about 4.5...Ch. 25 - Rank the three types of natural radiation (, , ):...Ch. 25 - What information was used to identify α and β...Ch. 25 - How is Figure 25.3 used to predict the type of...Ch. 25 - Outline how the synthesis of new isotopes is...Ch. 25 - Cobalt-60, used as a source of high-energy gamma...Ch. 25 - Describe the process that uses carbon-14 for...Ch. 25 - Explain why carbon-14 dating is limited to the...Ch. 25 - How many alpha and beta emissions occur in the...Ch. 25 - The uranium-235 radioactive decay series includes...Ch. 25 - Chain reactions occur in a series of steps...Ch. 25 - The fission of uranium-235 releases 2 1010 kJ/...Ch. 25 - In a nuclear reactor, what is a moderator and what...Ch. 25 - Identify the other element generated in the...Ch. 25 - What are the units associated with each of the...Ch. 25 - The interaction of radiation with matter has both...Ch. 25 - What are the essential criteria for a radioactive...Ch. 25 - Write equations that describe the preparation of...Ch. 25 - Oxygen-15 is used in the medical procedure called...Ch. 25 - What are the advantages and disadvantages of food...Ch. 25 - Complete the following nuclear equations. Write...Ch. 25 - Complete the following nuclear equations. Write...Ch. 25 - Complete the following nuclear equations. Write...Ch. 25 - Complete the following nuclear equations. Write...Ch. 25 - The uranium-235 radioactive decay series,...Ch. 25 - The thorium-232 radioactive decay series,...Ch. 25 - What particle is emitted in the following nuclear...Ch. 25 - What is the product of the following nuclear decay...Ch. 25 - Predict the probable mode of decay for each of the...Ch. 25 - Predict the probable mode of decay for each of the...Ch. 25 - (a) Which of the following nuclei decay by decay?...Ch. 25 - (a) Which of the following nuclei decay by 10...Ch. 25 - Boron has two stable isotopes, 10B and 11B....Ch. 25 - Calculate the binding energy in kilojoules per...Ch. 25 - Calculate the binding energy per mole of nucleons...Ch. 25 - Calculate the binding energy per mole of nucleons...Ch. 25 - Calculate the binding energy per mole of nucleons...Ch. 25 - Calculate the binding energy per mole of nucleons...Ch. 25 - Copper(II) acetate containing 64Cu is used to...Ch. 25 - Gold-198 is used in the diagnosis of liver...Ch. 25 - Iodine-131 is used to treat thyroid cancer. (a)...Ch. 25 - Phosphorus-32 is used in the form of Na2HPO4 in...Ch. 25 - Gallium-67 (t = 78.25 hours) is used in the...Ch. 25 - Iodine-131 (t = 8.04 days), a emitter, is used to...Ch. 25 - Radon has been the focus of much attention...Ch. 25 - Strontium-90 is a hazardous radioactive isotope...Ch. 25 - Radioactive cobalt-60 is used extensively in...Ch. 25 - Scandium occurs in nature as a single isotope,...Ch. 25 - Americium-240 is made by bombarding plutonium-239...Ch. 25 - There are two isotopes of americium, both with...Ch. 25 - The superheavy element 287FI (element 114) was...Ch. 25 - To synthesize the heavier transuranium elements, a...Ch. 25 - Deuterium nuclei (H12) are particularly effective...Ch. 25 - Some important discoveries in scientific history...Ch. 25 - Boron is an effective absorber of neutrons. When...Ch. 25 - Some of the reactions explored by Ernest...Ch. 25 - A technique to date geological samples uses...Ch. 25 - Tritium, H13, is one of the nuclei used in fusion...Ch. 25 - Phosphorus occurs in nature as a single isotope,...Ch. 25 - In June 1972, natural fission reactors, which...Ch. 25 - If a shortage in worldwide supplies of fissionable...Ch. 25 - When a neutron is captured by an atomic nucleus,...Ch. 25 - The synthesis of livermorium: (a) Lv-296 is made...Ch. 25 - Some important discoveries in scientific history...Ch. 25 - A piece of charred bone found in the ruins of a...Ch. 25 - A sample of wood from a Thracian chariot found in...Ch. 25 - The isotope of polonium that was most likely...Ch. 25 - Sodium-23 (in a sample of NaCI) is subjected to...Ch. 25 - The age of minerals can sometimes be determined by...Ch. 25 - To measure the volume of the blood system of an...Ch. 25 - The average energy output of a good grade of coal...Ch. 25 - Collision of an electron and a positron results in...Ch. 25 - The principle underlying the isotope dilution...Ch. 25 - Radioactive isotopes are often used as "tracers'...Ch. 25 - The thorium decay series includes the...Ch. 25 - The last unknown element between bismuth and...Ch. 25 - You might wonder how it is possible to determine...Ch. 25 - Marie and Pierre Curie isolated radium and...
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