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Chang - Chemistry 10/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 11 / 13

Due : Wednesday, September 4, 2019 07:00 EDT

Last Saved : n/a Saving...  ()

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Question
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11/13 (84.6%)

  • Instructions

    Chemistry 10/e by Raymond Chang published by McGraw-Hill Higher Education now has animations with conceptual questions and tutorial problems offering feedback and hints to guide student content mastery, as well as over 1150 end-of-chapter questions. You can check out a sampling of this exciting development below.

    Designed by teachers for teachers, WebAssign is easy to use and reliable -- a trusted companion to your teaching.

    Click here for a list of all of the questions coded in WebAssign.

    Question 1 is an animation with an assignable quiz attached.

    Question 2 is a follow-up Practice Exercise which checks student understanding of the related Example in the textbook. Practice Exercise 3.12, for example, is directly related to Exercise 3.12. This question uses WebAssign's chemPad answer entry tool, which provides students with immediate intelligent feedback based on their incorrect answers.

    Question 3 and 4 are algorithmic end-of-chapter problems with conditional feedback added to the numerical answers. Question 4 asks students to draw Lewis Structures using the popular MarvinSketch application, providing instant assessment of students' molecular drawings.

    Question 5 is a supplemental multiple choice question, with explanatory solutions. These questions provide additional coverage of topics throughout the textbook.

    Question 6 is a testbank question. 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.

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. –/5 points Chang10 9.A.01. My Notes
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Ionic, Nonpolar and Polar Covalent Bonds Use the animation to answer the following questions.
(a) The element that is common to all three examples exhibits which of the following characteristics?
    

(b) In each of the three examples presented, which of the following is true?
    

This animation will begin with a narration when you click "Open in New Window" below. To restart the narration, click "Open in New Window" again.
(c) The first and third examples differ from the second in that:
    

(d) A nonpolar covalent bond is shown as:
    

(e) Consider the following representation given for the bond formed in the third example.

Which of the following could be correctly stated about this diagram?
    
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2. –/1 points Chang10 3.PE.12. My Notes
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about this problemPractice Exercise 3.12
Balance the following equation. (Use the lowest possible coefficients. Omit states-of-matter in your answer.)
P4 + NO → P4O6 + N2

chemPad

Help

 
HINTS
I'm Stuck
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3. –/1 points Chang10 3.EOCP.073. My Notes
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Each copper(II) sulfate unit is associated with five water molecules in crystalline copper(II) sulfate pentahydrate (CuSO4 · 5 H2O). When this compound is heated in air above 100° C, it loses the water molecules and also its blue color.
CuSO4·5 H2O CuSO4 + 5 H2O
If 8.80 g of CuSO4 are left after heating 13.76 g of the blue compound, calculate the number of moles of H2O originally present in the compound.
WebAssign will check your answer for the correct number of significant figures.(No Response) moles
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4. –/4 points Chang10 9.EOCP.045. My Notes
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Draw the correct Lewis structures for the following molecules. (Assign radical electrons, lone pairs, and atomic charges as appropriate.)
(a) ICl
(No Response)

(b) P4 (each P is bonded to three other P atoms)
(No Response)

(c) COBr2 (C is bonded to O and Br atoms)
(No Response)

(d) N2H4
(No Response)
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5. –/1 points Chang10 3.Supp.7.09. My Notes
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Which of the following chemical equations is NOT balanced?
    
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6. –/1 points Chang10 3.TB.006. My Notes
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The mass of 1.21 ✕ 1020 atoms of sulfur is
    
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