Question 1

For the a particle in a box in the n = 1 state, you are most likely to find the particle

Accepted Answer

A)  at the left edge of the box. 
B)  at the right edge of the box. 
C)  in the middle of the box. 
D)  the particle is equally likely to be found at all positions. 
E)  it depends on the energy. 
A)  at the left edge of the box. 
B)  at the right edge of the box. 
C)  in the middle of the box. 
D)  the particle is equally likely to be found at all positions. 
E)  it depends on the energy.

Question 2

In Bohr's model of the atom the radius of an electron in the n=2 orbit is

Accepted Answer

A)  0.25 times the radius of the n=1 orbit 
B)  0.5 times the radius of the n=1 orbit 
C)  the same as the radius of the n=1 orbit 
D)  2 times the radius of the n=1 orbit 
E)  4 times the radius of the n=1 orbit 
A)  0.25 times the radius of the n=1 orbit 
B)  0.5 times the radius of the n=1 orbit 
C)  the same as the radius of the n=1 orbit 
D)  2 times the radius of the n=1 orbit 
E)  4 times the radius of the n=1 orbit

Question 3

The uncertainty in the velocity of an electron is 1×105 m s-1. What is the minimum uncertainty in its position?

Accepted Answer

A)  5.79×10-5 m 
B)  2.31×10-9 m 
C)  5.79×10-10 m 
D)  2.31×10-10 m 
E)  1.08×10-10 
A)  5.79×10-5 m 
B)  2.31×10-9 m 
C)  5.79×10-10 m 
D)  2.31×10-10 m 
E)  1.08×10-10

Question 4

Which has the shortest wavelength?

Accepted Answer

A)  500 nm light 
B)  1015 Hz light 
C)  an electron traveling at 2×105 m s-1 
D)  a 10 g mass traveling at 10 m s-1 
E)  there is no way to know 
A)  500 nm light 
B)  1015 Hz light 
C)  an electron traveling at 2×105 m s-1 
D)  a 10 g mass traveling at 10 m s-1 
E)  there is no way to know

Question 5

The index of refraction is the ratio of the speed of light in that medium to the speed of light in vacuum. If it takes a pulse of 500 nm light 0.15 ns to travel through a 3 cm block of glass, what is the index of refraction of the glass?

Accepted Answer

A)  0.0015 
B)  1.5 
C)  10 
D)  30 
E)  500 
A)  0.0015 
B)  1.5 
C)  10 
D)  30 
E)  500

Question 6

A laser emits 10 mJ pulses of 532 nm light. How many photons are in each pulse?

Accepted Answer

A)  2.68×1016 
B)  3.73×1017 
C)  2.52×1018 
D)  3.73×1018 
E)  5.36×1018 
A)  2.68×1016 
B)  3.73×1017 
C)  2.52×1018 
D)  3.73×1018 
E)  5.36×1018

Question 7

In the Franck-Hertz experiment on potassium shows a threshold occurs at 1.55 eV, what which of the following wavelengths would you expect to observe just above this threshold?

Accepted Answer

A)  155 nm 
B)  374 nm 
C)  400 nm 
D)  600 nm 
E)  800 nm 
A)  155 nm 
B)  374 nm 
C)  400 nm 
D)  600 nm 
E)  800 nm

Question 8

For the one dimensional particle in a box if you double the length of the box the ground state energy will

Accepted Answer

A)  decrease by a factor of 4. 
B)  decrease by a factor of 2. 
C)  stay the same. 
D)  increase by a factor of 2. 
E)  increase by a factor of 4. 
A)  decrease by a factor of 4. 
B)  decrease by a factor of 2. 
C)  stay the same. 
D)  increase by a factor of 2. 
E)  increase by a factor of 4.

Question 9

The energy of electromagnetic radiation is directly proportional to...

Accepted Answer

A)  The amplitude of the wave 
B)  The frequency of the wave 
C)  The wavelength of the wave 
D)  A and B 
E)  B and C 
A)  The amplitude of the wave 
B)  The frequency of the wave 
C)  The wavelength of the wave 
D)  A and B 
E)  B and C

Question 10

Hydrogen has a strong emission line at 6563 Å. What is the energy difference between the energy levels in hydrogen that are involved in this transition?

Accepted Answer

A)  6.56×10-10 J 
B)  4.67×10-14 J 
C)  1.07×10-19 J 
D)  3.03×10-19 J 
E)  6.56×10-19 J 
A)  6.56×10-10 J 
B)  4.67×10-14 J 
C)  1.07×10-19 J 
D)  3.03×10-19 J 
E)  6.56×10-19 J

Question 11

Bohr in his model of the atom assumed that what was quantized?

Accepted Answer

A)  the radius of the electron orbit 
B)  the energy of the electron 
C)  the kinetic energy of the electron 
D)  the angular momentum of the electron 
E)  the coulomb potential 
A)  the radius of the electron orbit 
B)  the energy of the electron 
C)  the kinetic energy of the electron 
D)  the angular momentum of the electron 
E)  the coulomb potential

Question 12

If the vibrational frequency of H35Cl is 8.66×1013 Hz, what do you think the vibrational frequency of H37Cl would be?

Accepted Answer

A)  4.33×1013 Hz 
B)  8.20×1013 Hz 
C)  8.66×1013 Hz 
D)  9.15×1013 Hz 
E)  1.73×1014 Hz 
A)  4.33×1013 Hz 
B)  8.20×1013 Hz 
C)  8.66×1013 Hz 
D)  9.15×1013 Hz 
E)  1.73×1014 Hz

Question 13

For a particle in a cubic box, how many energy levels have an energy that is 2 times the energy of the ground state?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  8 
A)  0 
B)  1 
C)  2 
D)  3 
E)  8

For the a particle in a box in the n = 1 state, you are most likely to find the particle

In Bohr's model of the atom the radius of an electron in the n=2 orbit is

The uncertainty in the velocity of an electron is 1×10⁵ m s^-¹. What is the minimum uncertainty in its position?

Which has the shortest wavelength?

The index of refraction is the ratio of the speed of light in that medium to the speed of light in vacuum. If it takes a pulse of 500 nm light 0.15 ns to travel through a 3 cm block of glass, what is the index of refraction of the glass?

A laser emits 10 mJ pulses of 532 nm light. How many photons are in each pulse?

In the Franck-Hertz experiment on potassium shows a threshold occurs at 1.55 eV, what which of the following wavelengths would you expect to observe just above this threshold?

For the one dimensional particle in a box if you double the length of the box the ground state energy will

The energy of electromagnetic radiation is directly proportional to...

Hydrogen has a strong emission line at 6563 Å. What is the energy difference between the energy levels in hydrogen that are involved in this transition?

Bohr in his model of the atom assumed that what was quantized?

If the vibrational frequency of H³⁵Cl is 8.66×10¹³ Hz, what do you think the vibrational frequency of H³⁷Cl would be?

For a particle in a cubic box, how many energy levels have an energy that is 2 times the energy of the ground state?

The Atom in Modern Chemistry

Chemical Formulas, Equations, and Reaction Yields

Chemical Bonding: the Classical Description

Quantum Mechanics and Atomic Structure

Quantum Mechanics and Molecular Structure

Bonding in Organic Molecules

Binding in Transition Metal Compounds and Coordination Complexes

The Gaseous State

Solids, Liquids, and Phase Transitions

Solutions

Thermodynamic Processes and Thermochemistry

Spontaneous Processes and Thermodynamic Equilibrium

Chemical Equilibrium

Acid-Base Equilibria

Solubility and Precipitation Equilibria

Electrochemistry

Chemical Kinetics

Nuclear Chemistry

Molecular Spectroscopy and Photochemistry

Structure and Bonding in Solids

Inorganic Materials

Polymeric Materials and Soft Condensed Matter

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Exam 4: Introduction to Quantum Mechanics

For the a particle in a box in the n = 1 state, you are most likely to find the particle

In Bohr's model of the atom the radius of an electron in the n=2 orbit is

The uncertainty in the velocity of an electron is 1×105 m s-1. What is the minimum uncertainty in its position?

Which has the shortest wavelength?

The index of refraction is the ratio of the speed of light in that medium to the speed of light in vacuum. If it takes a pulse of 500 nm light 0.15 ns to travel through a 3 cm block of glass, what is the index of refraction of the glass?

A laser emits 10 mJ pulses of 532 nm light. How many photons are in each pulse?

In the Franck-Hertz experiment on potassium shows a threshold occurs at 1.55 eV, what which of the following wavelengths would you expect to observe just above this threshold?

For the one dimensional particle in a box if you double the length of the box the ground state energy will

The energy of electromagnetic radiation is directly proportional to...

Hydrogen has a strong emission line at 6563 Å. What is the energy difference between the energy levels in hydrogen that are involved in this transition?

Bohr in his model of the atom assumed that what was quantized?

If the vibrational frequency of H35Cl is 8.66×1013 Hz, what do you think the vibrational frequency of H37Cl would be?

For a particle in a cubic box, how many energy levels have an energy that is 2 times the energy of the ground state?

The Atom in Modern Chemistry

Chemical Formulas, Equations, and Reaction Yields

Chemical Bonding: the Classical Description

Quantum Mechanics and Atomic Structure

Quantum Mechanics and Molecular Structure

Bonding in Organic Molecules

Binding in Transition Metal Compounds and Coordination Complexes

The Gaseous State

Solids, Liquids, and Phase Transitions

Solutions

Thermodynamic Processes and Thermochemistry

Spontaneous Processes and Thermodynamic Equilibrium

Chemical Equilibrium

Acid-Base Equilibria

Solubility and Precipitation Equilibria

Electrochemistry

Chemical Kinetics

Nuclear Chemistry

Molecular Spectroscopy and Photochemistry

Structure and Bonding in Solids

Inorganic Materials

Polymeric Materials and Soft Condensed Matter

Filters

The uncertainty in the velocity of an electron is 1×10⁵ m s^-¹. What is the minimum uncertainty in its position?

If the vibrational frequency of H³⁵Cl is 8.66×10¹³ Hz, what do you think the vibrational frequency of H³⁷Cl would be?