key4(2) - CHEM 1212 Test IV Multiple Choice (3 points each)...

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CHEM 1212 Test IV Multiple Choice (3 points each) ____ 1. One kind of battery used in watches contains mercury(II) oxide. As current flows, the mercury oxide is reduced to mercury. (F = 96,500C/mol) HgO(s) + H 2 O( l ) + 2 e - Hg( l ) + 2 OH - (aq) If 2.5 × 10 -5 amperes flows continuously 1095 days, what mass of Hg( l ) is produced? a. 2.6 × 10 -6 g c. 0.10 g b. 1.0 × 10 -5 g d. 2.5 g c. 2.8 × 10 -5 g ____ 2. Which symbol represents a beta particle? a. d. b. β 0 1 e. c. ____ 3. If a nucleus emits an alpha particle a. its atomic number decreases by four and its mass number decreases by two. b. its atomic number decreases by two and its mass number decreases by four. c. its atomic number decreases by two and its mass number decreases by two. d. its atomic number decreases by four and its mass number is unchanged. e. its atomic number is unchanged and its mass number decreases by four. ____ 4. What nuclide is produced by the beta decay of In-127? a. d. b. e. c. ____ 5. Complete the following nuclear reaction. e o 1 + + _____ a. d. b. e. c. ____ 6. A plot of the number of neutrons versus the number of protons in nuclei shows a narrow band of stable isotopes. Elements below this narrow line may attain stability by a. beta emission. b. neutron emission. c. electron capture. d.
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key4(2) - CHEM 1212 Test IV Multiple Choice (3 points each)...

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