The position of an electron in a Be2+ ion is known to 5.0´10-11 m. What is the uncertainty in its velocity?

A) 2.0´105 m s-1 B) 1.2´106 m s-1 C) 4.6´106 m s-1 D) 9.2´106 m s-1 E) 3.0´108 m s-1 A) 2.0´105 m s-1 B) 1.2´106 m s-1 C) 4.6´106 m s-1 D) 9.2´106 m s-1 E) 3.0´108 m s-1 B

If the bond in carbon monoxide is modeled as a harmonic oscillator the force constant is 1860 N m-1, and the reduced mass is 6.86 amu. What is the energy of the ground vibrational state of CO?

A) 1.35´10-21 J B) 2.71´10-21 J C) 3.53´10-21 J D) 2.13´10-20 J E) 4.26´10-20 J A) 1.35´10-21 J B) 2.71´10-21 J C) 3.53´10-21 J D) 2.13´10-20 J E) 4.26´10-20 J

Exam 3: Introduction to Quantum Mechanics and Chemical Bonding

Explore all topics

Before the discovery of the element germanium in 1886, its existence was predicted by Mendeleev as "eka-silicon". Mendeleev not only predicted the existence of this element but also its properties. Use the density of the neighboring elements to estimate the density of Ge.

Free

(Multiple Choice)

4.7/5

(39)

Question 1

Correct Answer:

Verified

Proper wavefunctions ( ) in quantum mechanics must be normalized. Which statement below best summarizes this mathematically?

Free

(Multiple Choice)

4.9/5

(49)

Question 2

Correct Answer:

Verified

The position of an electron in a Be²⁺ ion is known to 5.0´10^-¹¹ m. What is the uncertainty in its velocity?

Free

(Multiple Choice)

4.8/5

(29)

Question 3

Correct Answer:

Verified

The work function for aluminum is 6.53´10^-¹⁹ J. If a surface of aluminum is irradiated with 400 nm what is the maximum kinetic energy of the electrons emitted from the surface due to the photo-electric effect?

(Multiple Choice)

4.9/5

(39)

Question 4

If the bond in carbon monoxide is modeled as a harmonic oscillator the force constant is 1860 N m^-¹, and the reduced mass is 6.86 amu. What is the energy of the ground vibrational state of CO?

(Multiple Choice)

4.9/5

(41)

Question 5

Given the following the data, what is the energy change for this reaction? $Given the following the data, what is the energy change for this reaction? Na(g) + Cl(g) \rightarrow Na<sup>+</sup>(g) + Cl<sup>-</sup>(g)$ Na(g) + Cl(g) $\rightarrow$ Na⁺(g) + Cl^-(g)

(Multiple Choice)

4.8/5

(35)

Question 6

Which of the following is the best Lewis diagram for formaldehyde, CH₂O?

(Multiple Choice)

4.8/5

(26)

Question 7

Showing 1 - 7 of 7

Before the discovery of the element germanium in 1886, its existence was predicted by Mendeleev as "eka-silicon". Mendeleev not only predicted the existence of this element but also its properties. Use the density of the neighboring elements to estimate the density of Ge.

Proper wavefunctions ( ) in quantum mechanics must be normalized. Which statement below best summarizes this mathematically?

The position of an electron in a Be²⁺ ion is known to 5.0´10^-¹¹ m. What is the uncertainty in its velocity?

The work function for aluminum is 6.53´10^-¹⁹ J. If a surface of aluminum is irradiated with 400 nm what is the maximum kinetic energy of the electrons emitted from the surface due to the photo-electric effect?

If the bond in carbon monoxide is modeled as a harmonic oscillator the force constant is 1860 N m^-¹, and the reduced mass is 6.86 amu. What is the energy of the ground vibrational state of CO?

Given the following the data, what is the energy change for this reaction? $Given the following the data, what is the energy change for this reaction? Na(g) + Cl(g) \rightarrow Na<sup>+</sup>(g) + Cl<sup>-</sup>(g)$ Na(g) + Cl(g) $\rightarrow$ Na⁺(g) + Cl^-(g)

Which of the following is the best Lewis diagram for formaldehyde, CH₂O?

The Atom in Modern Chemistry

Chemical Formulas, Chemical Equations, and Reaction Yields

Quantum Mechanics, Atomic Structure, Quantum Mechanics and Molecular Structure

Solids, Liquids, Phase Transitions, Gaseous State and Bonding in Organic Molecules

Solutions

Thermodynamic Processes, Thermochemistry, Spontaneous Processes and Thermodynamic Equilibrium

Chemical Equilibrium

Acidûbase Equilibria

Solubility and Precipitation Equilibria

Electrochemistry

Chemical Kinetics

Inorganic Materials, Structure, Bonding in Solids, Molecular Spectroscopy, Photochemistry and Nuclear Chemistry

Filters

Exam 3: Introduction to Quantum Mechanics and Chemical Bonding

Before the discovery of the element germanium in 1886, its existence was predicted by Mendeleev as "eka-silicon". Mendeleev not only predicted the existence of this element but also its properties. Use the density of the neighboring elements to estimate the density of Ge.

Proper wavefunctions ( ) in quantum mechanics must be normalized. Which statement below best summarizes this mathematically?

The position of an electron in a Be2+ ion is known to 5.0´10-11 m. What is the uncertainty in its velocity?

The work function for aluminum is 6.53´10-19 J. If a surface of aluminum is irradiated with 400 nm what is the maximum kinetic energy of the electrons emitted from the surface due to the photo-electric effect?

If the bond in carbon monoxide is modeled as a harmonic oscillator the force constant is 1860 N m-1, and the reduced mass is 6.86 amu. What is the energy of the ground vibrational state of CO?

Given the following the data, what is the energy change for this reaction? Na(g) + Cl(g) →\rightarrow→ Na+(g) + Cl-(g)

Which of the following is the best Lewis diagram for formaldehyde, CH2O?

The Atom in Modern Chemistry

Chemical Formulas, Chemical Equations, and Reaction Yields

Quantum Mechanics, Atomic Structure, Quantum Mechanics and Molecular Structure

Solids, Liquids, Phase Transitions, Gaseous State and Bonding in Organic Molecules

Solutions

Thermodynamic Processes, Thermochemistry, Spontaneous Processes and Thermodynamic Equilibrium

Chemical Equilibrium

Acidûbase Equilibria

Solubility and Precipitation Equilibria

Electrochemistry

Chemical Kinetics

Inorganic Materials, Structure, Bonding in Solids, Molecular Spectroscopy, Photochemistry and Nuclear Chemistry

Filters

The position of an electron in a Be²⁺ ion is known to 5.0´10^-¹¹ m. What is the uncertainty in its velocity?

The work function for aluminum is 6.53´10^-¹⁹ J. If a surface of aluminum is irradiated with 400 nm what is the maximum kinetic energy of the electrons emitted from the surface due to the photo-electric effect?

If the bond in carbon monoxide is modeled as a harmonic oscillator the force constant is 1860 N m^-¹, and the reduced mass is 6.86 amu. What is the energy of the ground vibrational state of CO?

Given the following the data, what is the energy change for this reaction? $Given the following the data, what is the energy change for this reaction? Na(g) + Cl(g) \rightarrow Na<sup>+</sup>(g) + Cl<sup>-</sup>(g)$ Na(g) + Cl(g) $\rightarrow$ Na⁺(g) + Cl^-(g)

Which of the following is the best Lewis diagram for formaldehyde, CH₂O?