Old Exam 2 - 1. Fluorine-18 radioactively decays by the...

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1. Fluorine-18 radioactively decays by the emission of a positron (β + ) Which of the following is the product nuclide of this decay? a. neon-18 ( 10 Ne) b. oxygen-18 ( 8 O) c. fluorine 17 ( 9 F) d. nitrogen 14 ( 7 N e. fluorine-16 ( 9 F) 2. Carbon-14 radioactively decays via the emission of a beta minus (β - ) particle. Which of the following is the product nuclide of this decay? a. carbon-13 ( 6 C) b. carbon-14 ( 6 C) c. nitrogen-14 ( 7 N) d. boron-14 ( 5 B) e. beryllium-10 ( 4 Be) 3. An archeologist unearths a bone sample and wants to know the age of the bone. Her chemist friend determines that 49% of the initial amount of carbon-14 is present in the bone sample. If the half-life of carbon-14 is 5730 years, the age of the bone is approximately a. 5730 years b. 2865 years c. 1432 years d. 11,460 years e 17,190 years 4. The function of the MODERATOR in a nuclear power plant is to: . a. carry the heat produced from the fission reactions to make steam. . b. absorb neutrons and thereby control the fission reactions. c. protect the workers and the environment from radiation. . d. slow down the neutrons produced from the fission reactions so that they can cause fissioning e. none of the above responses is correct. 5. When polonium-216 decays by the emission of one alpha particle and then two beta minus (β - ) particles, the product is the isotope: a. 84 Po-210 b. 84 Po -212 c. 84 Po -214 d. 84 Po -218 e. 84 Po-220 6. Orange-colored Fiesta tableware causes a Geiger counter to emit a rapid clicking sound. The BEST explanation of this phenomenon is that the pottery: a. has a lead glaze. b.
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This note was uploaded on 03/03/2010 for the course CHEM 101 taught by Professor Everettturner during the Spring '08 term at UMass (Amherst).

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Old Exam 2 - 1. Fluorine-18 radioactively decays by the...

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