Filters
Question type
Study Flashcards

Calcium-39 undergoes positron decay.Each positron carries 5.49 MeV of energy.How much energy will be emitted when 0.0025 mol of calcium-39 decays?


A) 13.2 kJ
B) 1.32 ×\times 104 kJ
C) 1.32 ×\times 106 kJ
D) 1.32 ×\times 109 kJ
E) None of these choices is correct.

Correct Answer

verifed

verified

Select the nuclide that completes the following nuclear reaction. Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)


A)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
B)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
C)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
D)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
E)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)

Correct Answer

verifed

verified

B

The radioisotope The radioisotope Will decay through A) ( \alpha decay.) B) ( \beta decay.) C) positron decay. D) electron capture. E) ( \gamma decay.) Will decay through


A) ( α\alpha decay.)
B) ( β\beta decay.)
C) positron decay.
D) electron capture.
E) ( γ\gamma decay.)

Correct Answer

verifed

verified

The isotopes The isotopes Are all stable,while Is radioactive.The mode of decay for Is most likely to be A) positron decay. B) ( \alpha decay.) C) ( \gamma decay.) D) electron capture. E) ( \beta decay.) Are all stable,while The isotopes Are all stable,while Is radioactive.The mode of decay for Is most likely to be A) positron decay. B) ( \alpha decay.) C) ( \gamma decay.) D) electron capture. E) ( \beta decay.) Is radioactive.The mode of decay for The isotopes Are all stable,while Is radioactive.The mode of decay for Is most likely to be A) positron decay. B) ( \alpha decay.) C) ( \gamma decay.) D) electron capture. E) ( \beta decay.) Is most likely to be


A) positron decay.
B) ( α\alpha decay.)
C) ( γ\gamma decay.)
D) electron capture.
E) ( β\beta decay.)

Correct Answer

verifed

verified

Explain how the number of protons and neutrons in a radioactive nucleus can be used to predict its probable mode of decay.Illustrate your answer with a schematic graph,properly labeled,showing stable nuclides (nuclei)in relation to number of protons and neutrons.

Correct Answer

verifed

verified

The "line of stability" on the accompany...

View Answer

Bombardment of uranium-238 nuclei by carbon-12 nuclei produces californium-246 and neutrons.Write a complete,balanced equation for this nuclear process.

Correct Answer

verifed

verified

11ea8a63_0615_5c46_9a87_1d02d7d7ec59_TB5832_11

Fill in missing sub- and superscripts for all particles to complete the following equation for alpha decay. Fill in missing sub- and superscripts for all particles to complete the following equation for alpha decay.

Correct Answer

verifed

verified

A 9.52 ×\times 10-5 mol sample of rubidium-86 emits 8.87 ×\times 1016 β\beta particles in one hour.What is the half-life of rubidium-86?


A) 2.23 ×\times 10-3 h
B) 1.55 ×\times 10-3 h
C) 448 h
D) 645 h
E) None of these choices is correct.

Correct Answer

verifed

verified

The masses of a potassium-40 atom,a proton and a neutron are 39.963999 amu,1.007825 amu and 1.008665 amu,respectively.Calculate to four significant figures a.the mass defect in amu and b.the energy released in MeV/nucleon,in the formation of The masses of a potassium-40 atom,a proton and a neutron are 39.963999 amu,1.007825 amu and 1.008665 amu,respectively.Calculate to four significant figures a.the mass defect in amu and b.the energy released in MeV/nucleon,in the formation of from the appropriate number of protons and neutrons. from the appropriate number of protons and neutrons.

Correct Answer

verifed

verified

a.0.3666 a...

View Answer

Identify the missing species in the following nuclear transmutation. Identify the missing species in the following nuclear transmutation. A) B) C) D) E) None of these choices is correct.


A)
Identify the missing species in the following nuclear transmutation. A) B) C) D) E) None of these choices is correct.
B)
Identify the missing species in the following nuclear transmutation. A) B) C) D) E) None of these choices is correct.
C)
Identify the missing species in the following nuclear transmutation. A) B) C) D) E) None of these choices is correct.
D)
Identify the missing species in the following nuclear transmutation. A) B) C) D) E) None of these choices is correct.
E) None of these choices is correct.

Correct Answer

verifed

verified

The radioisotope The radioisotope Will decay through A) ( \alpha decay.) B) 9 \beta decay.) C) ( \gamma decay.) D) positron decay. E) electron capture. Will decay through


A) ( α\alpha decay.)
B) 9 β\beta decay.)
C) ( γ\gamma decay.)
D) positron decay.
E) electron capture.

Correct Answer

verifed

verified

A

A 7.85 ×\times 10-5 mol sample of copper-61 emits 1.47 ×\times 1019 positrons in 90.0 minutes.What is the decay constant for copper-61?


A) 0.00230 h-1
B) 0.00346 h-1
C) 0.207 h-1
D) 0.311 h-1
E) None of these choices is correct.

Correct Answer

verifed

verified

Which one of the following is an incorrect representation of the indicated particle or nucleus?


A)
Which one of the following is an incorrect representation of the indicated particle or nucleus? A) B) C) D) E)
B)
Which one of the following is an incorrect representation of the indicated particle or nucleus? A) B) C) D) E)
C)
Which one of the following is an incorrect representation of the indicated particle or nucleus? A) B) C) D) E)
D)
Which one of the following is an incorrect representation of the indicated particle or nucleus? A) B) C) D) E)
E)
Which one of the following is an incorrect representation of the indicated particle or nucleus? A) B) C) D) E)

Correct Answer

verifed

verified

The isotope The isotope Is unstable.This is predictable because A) the number of neutrons is too large in relation to the number of protons. B) the number of neutrons is too small in relation to the number of protons. C) the atomic number is too large. D) the mass number is too large. E) Sc isotopes are all unstable. Is unstable.This is predictable because


A) the number of neutrons is too large in relation to the number of protons.
B) the number of neutrons is too small in relation to the number of protons.
C) the atomic number is too large.
D) the mass number is too large.
E) Sc isotopes are all unstable.

Correct Answer

verifed

verified

Select the nuclide that completes the following nuclear reaction. Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)


A)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
B)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
C)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
D)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
E)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)

Correct Answer

verifed

verified

The isotope The isotope Has a half-life of 21 hours.If a sample initially contains exactly 10000 atoms of ,approximately how many of these atoms will remain after one week? A) 1250 B) 78 C) 39 D) 0 E) None of these choices is correct. Has a half-life of 21 hours.If a sample initially contains exactly 10000 atoms of The isotope Has a half-life of 21 hours.If a sample initially contains exactly 10000 atoms of ,approximately how many of these atoms will remain after one week? A) 1250 B) 78 C) 39 D) 0 E) None of these choices is correct. ,approximately how many of these atoms will remain after one week?


A) 1250
B) 78
C) 39
D) 0
E) None of these choices is correct.

Correct Answer

verifed

verified

Identify the missing species in the following nuclear transmutation. Identify the missing species in the following nuclear transmutation. A) 2 B) 3 C) D) E)


A) 2
Identify the missing species in the following nuclear transmutation. A) 2 B) 3 C) D) E)
B) 3
Identify the missing species in the following nuclear transmutation. A) 2 B) 3 C) D) E)
C)
Identify the missing species in the following nuclear transmutation. A) 2 B) 3 C) D) E)
D)
Identify the missing species in the following nuclear transmutation. A) 2 B) 3 C) D) E)
E)
Identify the missing species in the following nuclear transmutation. A) 2 B) 3 C) D) E)

Correct Answer

verifed

verified

Which of the following isotopes is definitely unstable?


A)
Which of the following isotopes is definitely unstable? A) B) C) D) E)
B)
Which of the following isotopes is definitely unstable? A) B) C) D) E)
C)
Which of the following isotopes is definitely unstable? A) B) C) D) E)
D)
Which of the following isotopes is definitely unstable? A) B) C) D) E)
E)
Which of the following isotopes is definitely unstable? A) B) C) D) E)

Correct Answer

verifed

verified

Select the nuclide that completes the following nuclear reaction. Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)


A)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
B)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
C)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
D)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
E)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)

Correct Answer

verifed

verified

Select the nuclide that completes the following nuclear reaction. Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)


A)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
B)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
C)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
D)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)
E)
Select the nuclide that completes the following nuclear reaction. A) B) C) D) E)

Correct Answer

verifed

verified

Showing 1 - 20 of 75

Related Exams

Exam 1

Keys to the Study of Chemistry

66 Questions

Exam 2

The Components of Matter

91 Questions

Exam 3

Stoichiometry of Formulas and Equations

90 Questions

Exam 4

Three Major Classes of Chemical Reactions

84 Questions

Exam 5

Gases and the Kinetic-Molecular Theory

93 Questions

Exam 6

Thermochemistry: Energy Flow and Chemical Change

71 Questions

Exam 7

Quantum Theory and Atomic Structure

72 Questions

Exam 8

Electron Configuration and Chemical Periodicity

70 Questions

Exam 9

Models of Chemical Bonding

60 Questions

Exam 10

The Shapes of Molecules

94 Questions

Exam 11

Theories of Covalent Bonding

49 Questions

Exam 12

Intermolecular Forces: Liquids,solids,and Phase Changes

89 Questions

Exam 13

The Properties of Solutions

73 Questions

Exam 14

The Main-Group Elements: Applying Principles of Bonding and Structure

58 Questions

Exam 15

Organic Compounds and the Atomic Properties of Carbon

95 Questions

Exam 16

Kinetics: Rates and Mechanisms of Chemical Reactions

76 Questions

Exam 17

Equilibrium: the Extent of Chemical Reactions

85 Questions

Exam 18

Acid-Base Equilibria

90 Questions

Exam 19

Ionic Equilibria in Aqueous Systems

96 Questions

Exam 20

Thermodynamics: Entropy, free Energy, and the Direction of Chemical Reactions

84 Questions

Exam 21

Electrochemistry: Chemical Change and Electrical Work

97 Questions

Exam 22

The Transition Elements and Their Coordination Compounds

72 Questions

Show Answer