WebAssign is not supported for this browser version. Some features or content might not work. System requirements

WebAssign

Welcome, demo@demo

(sign out)

Friday, March 28, 2025 18:00 EDT

Home My Assignments Grades Communication Calendar My eBooks

McQuarie and Simon - Physical Chemistry 1/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 18 / 23

Due : Wednesday, November 6, 2019 23:59 EST

Last Saved : n/a Saving...  ()

Print Assignment
Question
Points
1 2 3 4 5 6 7 8
–/9 –/1 –/2 –/1 –/4 –/1 –/2 –/3
Total
18/23 (78.3%)

  • Instructions

    WebAssign is proud to be the exclusive online homework system for Physical Chemistry: A Molecular Approach, 1st edition, by McQuarrie and Simon, from University Science Books.

    Below is a selection of questions related to chemical composition and stoichiometry that shows some of the capabilities of WebAssign. Many problems showcase the different randomizations we can perform (shown in red) and modes for student responses.

    Question 1 (9.P.009.dv.) shows a step-by-step derivation, highlighting WebAssign’s advanced mathematics capabilities. Derivation questions have a ".dv" suffix to make them easy to locate when creating assignments.

    Questions 2 (9.P.018.) and 3 (9.P.038.) show the range of numeric capabilities from simple integer values to atomic-level values in the 10−20 to 10−30 range.

    Questions 4 (9.P.014.) and 5 (9.P.031.) show our chemPad tool used for chemical symbols, term symbols, and other chemistry-specific entries.

    Question 6 (9.P.032.) shows an alternate method of handling term symbols via multiple select, when several options are needed to describe a system.

    Question 7 (9.P.021.) shows how fill-in-the-blank answers can be used to accept name or symbol designations.

    View the complete list of WebAssign questions available for this textbook. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

    The answer key and solutions will display after the first submission for demonstration purposes. Instructors can configure these to display after the due date or after a specified number of submissions.

Assignment Submission

For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.

Assignment Scoring

Your last submission is used for your score.

1. –/9 points McQPChem1 9.P.009.dv. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6 7 8 9
–/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
–/9
 
This question has several parts that must be completed sequentially.

Derivation
Show explicitly that an s orbital on one hydrogen atom and a px orbital on another have zero overlap. Use the 2s and 2px wave functions given in this table to set up the overlap integral. Take the z-axis to lie along the internuclear axis.
Step 1 of 5
What are the wave equations for
ψ2s and ψ2px?
 (Use the following as necessary: a0, ϕ, r, and θ.)
ψ2s = (No Response) 1/(4 sqrt(2 pi))(1/a_0)^(3/2)(2-r/a_0)e^(-r/(2 a_0))
ψ2px = (No Response) 1/(4 sqrt(2 pi))(1/a_0)^(3/2) r/a_0 e^(-r/(2 a_0)) sin(theta) cos(phi)


Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
2. –/1 points McQPChem1 9.P.018. My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
Total
–/1
 
Determine the bond order of CN +.
(No Response) seenKey

2

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
3. –/2 points McQPChem1 9.P.038. My Notes
Question Part
Points
Submissions Used
1 2
–/1 –/1
0/50 0/50
Total
–/2
 
The dipole moment of PO is 6.27 ✕ 10−30 C·m. The bond length of PO is 163 pm. If PO is modeled as two point charges separated by its bond length, then what are the net charges on the P and O atoms?
P     WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

3.85e-20

 C
O     WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

-3.85e-20

 C

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
4. –/1 points McQPChem1 9.P.014. My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
Total
–/1
 
Predict the relative stabilities of the species O2, O2+, and O2−. (Use the appropriate <, =, or > symbol to separate substances in the list.)

chemPad

Help

 
O
 -
2
 < O2 < O2+

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
5. –/4 points McQPChem1 9.P.031. My Notes
Question Part
Points
Submissions Used
1 2 3 4
–/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50
Total
–/4
 
Determine the ground-state molecular term symbols of H2+, He2+, B2, and Li2.
H2+

chemPad

Help

 
2
 
Σ
 +
g

He2+

chemPad

Help

 
2
 
Σ
 +
u

B2

chemPad

Help

 
3
 
Σ
 -
g

Li2

chemPad

Help

 
1
 
Σ
 +
g

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
6. –/1 points McQPChem1 9.P.032. My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
Total
–/1
 
The highest occupied molecular orbitals for an excited electronic configuration of a sulfur molecule are
(2πg)1(4σu)1
Determine the molecular term symbols for sulfur with this electronic configuration. (Select all that apply.)

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
7. –/2 points McQPChem1 9.P.021. My Notes
Question Part
Points
Submissions Used
1 2
–/1 –/1
0/50 0/50
Total
–/2
 
Determine the smallest bond order for a first-row transition-metal homonuclear diatomic molecule.
The homonuclear diatomic form of first-row transition-metal (No Response) seenKey

Zn -or- zinc

 has the smallest bond order, (No Response) seenKey

0

 .

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
8. –/3 points McQPChem1 9.P.015. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
0/50 0/50 0/50
Total
–/3
 
Predict the relative bond strengths and bond lengths of diatomic boron, B2, and its positive ion, B2+.
The bond order of B2 is (No Response) seenKey

greater than

 that of B2+. Therefore, the relative bond strength of B2 should be (No Response) seenKey

greater than

 that of B2+ and the bond length of B2 should be (No Response) seenKey

shorter than

 that of B2+.

Supporting Materials

Additional Materials

Viewing Saved Work Revert to Last Response
Home My Assignments