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Silberberg - Chemistry: Matter and Change 5/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2011

Instructor: Dr. Friendly

Current Score : 0 / 12

Due : Sunday, January 15, 2012 07:00 EST

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  • Description

    Chemistry: The Molecular Nature of Matter and Change 5/e by Martin Silberberg 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. Sign up for a Free Trial today!

    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 Problem which checks student understanding of the related Sample Problem in the textbook. Follow-up Problem 3.1, for example, is directly related to Sample Problem 3.1.

    Question 3 and 4 are algorithmic end-of-chapter problems with conditional feedback added to the numerical answers.

    Question 5 is a supplemental "testbank" style question. These questions provide additional coverage of topics throughout the textbook.

  • Instructions

    This demo assignment allows many submissions and allows you to try another version of the same question for practice.

Assignment Submission

For this assignment, the number of submissions for each answer box is counted independently. The number of submissions remaining changes only if you submit a new or changed answer.

1. –/5 points Notes Question: Silber5 3.Animation.03.
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Stoichiometry Use the animation to answer the following questions.
(a) In the reaction of H2 with O2, if the maximum amount of O2 is used:
    


(b) In the reaction of H2 with O2, if 6 moles of H2 molecules are used:
    


(c) When H2 reacts with I2, as the number of moles of product increases:
    


(d) In the reaction producing HI, if 768 grams of HI form:
    


(e) Consider the reaction: H + H H2. This is the only reaction in the animation in which:
    

Your work in question(s) will also be submitted or saved.
2. –/1 points Notes Question: Silber5 3.FollowUp.01.
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FOLLOW-UP PROBLEM 3.1 Calculating the Mass and Number of Atoms in a Given Number of Moles of an Element about this problem
Graphite is the crystalline form of carbon used in lead pencils. How many moles of carbon are there in 355 mg of graphite?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 mol
HINTS
Getting Started
I'm Stuck


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3. –/2 points Notes Question: Silber5 3.EOCP.023.
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Cisplatin (below) is a powerful drug used in the treatment of certain cancers.
(a) Calculate the moles of compound in 204.8 g cisplatin.
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 mol
(b) Calculate the number of hydrogen atoms in 0.72 mol cisplatin.
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 atoms

Your work in question(s) will also be submitted or saved.
4. –/3 points Notes Question: Silber5 3.EOCP.012.
Question part
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Calculate each of the following quantities.
(a) mass in grams of 0.52 mol KMnO4
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 g
(b) moles of O atoms in 7.89 g Mg(NO3)2
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 mol
(c) number of O atoms in 6.2 10-3 g CuSO4·5 H2O
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 atoms

Your work in question(s) will also be submitted or saved.
5. –/1 points Notes Question: Silber5 3.Supp.3-01.
Question part
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Which of the following chemical equations is NOT balanced?
    

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