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 18:27 EDT

Home My Assignments Grades Communication Calendar My eBooks

Zumdahl - Intro Chemistry: A Foundation 7/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 18 / 21

Due : Thursday, April 9, 2020 06:00 EDT

Last Saved : n/a Saving...  ()

Print Assignment
Question
Points
1 2 3 4 5 6
–/6 –/4 –/3 –/3 –/3 –/2
Total
18/21 (85.7%)

  • Instructions

    Introductory Chemistry 7th Edition by Zumdahl/DeCoste includes more than 1100 end-of-chapter problems plus ChemWork assignments and Thinkwell® lecture videos. Questions provide links to Practice It exercises, Watch It videos, and relevant textbook pages.

    Questions 1-6 are end-of-chapter problems enhanced with links to Read It, Watch It, and Practice It buttons.

    Read It - Relevant textbook pages

    Watch It - Watch Its include 5 to 7 minute mini-lectures from Thinkwell®.

    Practice It - Practice Its include Visual Exercises that combine molecular-level animations and videos demonstrations that cover core chemistry concepts. Each animation or video is accompanied by questions to aid students in conceptualization of the topic. This demo assignment allows many submissions and allows you to try another version of the same question for practice.

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. –/6 points ZumIntro7 2.P.007. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6
–/1 –/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50 0/50
Total
–/6
 
Express each of the following numbers in standard scientific notation.
(a) 0.4212
WebAssign will check your answer for the correct number of significant figures.(No Response)

(b) 4,212,000
WebAssign will check your answer for the correct number of significant figures.(No Response)

(c) 0.000004212
WebAssign will check your answer for the correct number of significant figures.(No Response)

(d) 4.212
WebAssign will check your answer for the correct number of significant figures.(No Response)

(e) 4212
WebAssign will check your answer for the correct number of significant figures.(No Response)

(f) 0.004212
WebAssign will check your answer for the correct number of significant figures.(No Response)

Need Help? Watch It

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
2. –/4 points ZumIntro7 4.P.019. 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
 
Based on the following word descriptions, write the formula for each of the indicated substances.
(a) a compound that has equal numbers of potassium and iodide atoms

chemPad

Help

 


(b) a compound whose molecules each contain two nitrogen atoms and four oxygen atoms

chemPad

Help

 


(c) an aluminum compound in which there are three chlorine atoms for each aluminum atom

chemPad

Help

 


(d) a compound in which there is an equal number of sodium, hydrogen, and carbon atoms but there are three times as many oxygen atoms as atoms of the other three elements

chemPad

Help

 

Need Help? Watch It

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
3. –/3 points ZumIntro7 4.P.084. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
0/50 0/50 0/50
Total
–/3
 
For each of the following negative ions, use the concept that a chemical compound must have a net charge of zero to predict the formula of the simple compounds that the negative ions would form with the Cs+, Ba2+, and Al3+ ions. (Separate substances in the list with a comma.)
(a) I −

chemPad

Help

 


(b) O2-

chemPad

Help

 


(c) P3-

chemPad

Help

 
Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
4. –/3 points ZumIntro7 12.P.055. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
0/50 0/50 0/50
Total
–/3
 
Write the simple Lewis structure for each of the following atoms.
(a) Na (Z=11)
(No Response)

(b) Sn (Z=50)
(No Response)

(c) Sr (Z=38)
(No Response)

Need Help? Watch It

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
5. –/3 points ZumIntro7 20.P.055. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
0/50 0/50 0/50
Total
–/3
 
Draw a structural formula for each of the following aromatic or substituted aromatic compounds.
(a) 3-methylstyrene
(No Response)

(b) 2-bromophenol
(No Response)

(c) 1,3-dinitrobenzene
(No Response)

Need Help? Watch It

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
6. –/2 points ZumIntro7 20.P.135. My Notes
Question Part
Points
Submissions Used
1 2
–/1 –/1
0/50 0/50
Total
–/2
 
Name each of the following compounds.
(a)
(No Response)

(b)
(No Response)

Need Help? Watch It

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
Home My Assignments