June 2012 Chemistry Regents #82-85

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Base your answers to questions 82 through 85  on the information below.

Nuclear fission has been used to produce electricity. However, nuclear fusion for electricity production is still under development. The notations of some nuclides used in nuclear reactions are shown in the table below.

82 Compare the atomic masses of nuclides used in fusion to the atomic masses of nuclides used in fission. [1]

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nuclides used for fusion have smaller atomic masses

nuclides used for fission have much larger atomic masses

83 Complete the table in your answer booklet that compares the total number of protons and the total number of neutrons for the hydrogen nuclides used for fusion. [1]

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Nuclide

Total number of Protons Total number of Neutrons

1

H

1

1 0

3

H

1

1 2

84 Complete the nuclear equation in your answer booklet for the fission of ~U bywriting the notation of the missing product. [1]

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1

n

0

85 Slate one potential benefit of using nuclear fusion instead of the current use of nuclear fission to produce electricity. [1]

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more energy per gram of reactant   or

less radioactive waste    or

fusion material is more readily available

Raw score  (out of 85)

Grade
78 90
74 85
49 65

 

 

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