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Kotz et al - Chemistry&Chemical Reactivity 7/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 21.8 / 29

Due : Wednesday, October 23, 2019 08:00 EDT

Last Saved : n/a Saving...  ()

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Question
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1 2 3 4 5 6 7 8
–/9 –/5 –/6 –/1 –/1 –/1 –/2 –/1
Total
21.8/29 (75.2%)

  • Instructions

    Chemistry & Chemical Reactivity 7/e by John C. Kotz, Paul M. Treichel, and John Townsend published by Brooks/Cole Publishing now has animations with conceptual questions and tutorial problems offering feedback and hints to guide student content mastery, as well as over 800 end-of-chapter questions. You can check out a sampling of this exciting development below. WebAssign is the most utilized homework system in chemistry. Designed by teachers for teachers, WebAssign is easy to use, reliable -- a trusted companion to your teaching. Sign up for a Test Drive today!

    Question 1, 2, and 3 are traditional end-of-chapter questions with randomized chemical values chosen from an array of values.

    Question 4 is a structured Tutorial Question that offers feedback to the student at each stage of the solution..

    Question 5 is a balancing a chemical reaction question with randomized compounds from an array.

    Question 6 is a Simulation Question modeling a redox reaction to help a student visualize equilibria and limiting reagents.

    Question 7 is an algorithmic, randomized end-of-chapter question that checks for significant figures.

    Question 8 is a multiple correct answer question, randomized so not all students have the same question.

    Click here for a list of all of the questions coded in WebAssign. 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. –/9 points KT7 2.P.005. My Notes
Question Part
Points
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–/9
 
How many electrons, protons, and neutrons are there in the following atoms?
(a) aluminum-27, 27Al (b) titanium-48, 48Ti (c) lead-207, 207Pb
electrons
(No Response) seenKey

13
protons
(No Response) seenKey

13
neutrons
(No Response) seenKey

14

 		electrons
(No Response) seenKey

22
protons
(No Response) seenKey

22
neutrons
(No Response) seenKey

26

 		electrons
(No Response) seenKey

82
protons
(No Response) seenKey

82
neutrons
(No Response) seenKey

125
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2. –/5 points KT7 2.P.043. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5
–/1 –/1 –/1 –/1 –/1
0/50 0/50 0/50 0/50 0/50
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–/5
 
Give the formula for each of the following ionic compounds.
(a) silver(I) oxide

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Ag2O


(b) calcium hydrogen carbonate

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Ca(HCO3)2


(c) silver(I) acetate

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AgCH3CO2 or AgC2H3O2


(d) magnesium perchlorate

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Mg(ClO4)2


(e) potassium permanganate

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KMnO4
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3. –/6 points KT7 2.P.030. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6
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–/6
 
Give the symbol, including the correct charge, for each of the following ions.
(a) sulfate ion

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SO
 2-
4

(b) hypochlorite ion

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ClO-

(c) dihydrogen phosphate ion

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H2PO4-

(d) permanganate ion

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MnO
 -
4

(e) perchlorate ion

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ClO
 -
4

(f) nitrite ion

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NO
 -
2

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4. –/1 points KT7 4.Tut.Balancing Chemical Equations. My Notes
Question Part
Points
Submissions Used
1
–/1
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–/1
 

seenKey

.
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5. –/1 points KT7 3.P.030. My Notes
Question Part
Points
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1
–/1
0/50
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–/1
 
Write a balanced equation for the reaction of beryllium hydroxide with sulfuric acid. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.)

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Be(OH)2(aq) + H2SO4(aq)  →  BeSO4(aq) + 2 H2O(l)
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6. –/1 points KT7 4.EX.Limiting Reactants: Redox Reactions. My Notes
Question Part
Points
Submissions Used
1
–/1
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–/1
 

seenKey

.
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7. –/2 points KT7 4.P.001. My Notes
Question Part
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–/2
 
Aluminum reacts with oxygen to give aluminum oxide.
4 Al(s)+ 3 O2(g) 2 Al2O3(s)
What amount of O2 in moles is needed for complete reaction with 4.0 mol of Al?
WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

3.0

 mol
What mass of Al2O3, in grams, can be produced?
WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

2.0e+02

 g
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8. –/1 points KT7 6.P.029. My Notes
Question Part
Points
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1
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–/1
 
A possible excited state of the H atom has the electron in a 4p orbital. Select all possible sets of quantum numbers n, ℓ, and mℓ for this electron. (Select all that apply.)

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