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Hill, Petrucci, McCreary, & Perry-General Chem 4/e (Homework)

Chris Read

Prentice Hall, section 1, Fall 2010

Instructor: Mr. Prentice Hall

Current Score : 0 / 40

Due : Sunday, October 24, 2010 08:00 PM EDT

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Question
Points
1 2 3 4 5
0/3 0/1 0/31 0/2 0/3
Total
0/40

Description

Here are some textbook questions from General Chemistry 3/e by Hill, Petrucci, McCreary, and Perry published by Prentice Hall. Click here for a list of all of the questions coded in WebAssign.


Instructions

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



1. –/3 points Notes Question: HPMP4 1.035.
Question part
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Submissions
1 2 3
0/1 0/1 0/1
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0/3
 
Change the unit used to report each of the following measurements by replacing the power of ten by an appropriate SI prefix.
(a) 4.54 10-6 g
    


(b) 3.76 10-12 m
    


(c) 6.34 10-9 g
    



2. –/1 points Notes Question: HPMP4 2.022.
Question part
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1
0/1
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0/1
 
When 0.1213 g of magnesium is heated with 0.2172 g of nitrogen in a closed container, the magnesium is completely converted to 0.1679 g of magnesium nitride. What mass of unreacted nitrogen must remain?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 g

3. –/31 points Notes Question: HPMP4 4.056.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
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0/31
 
Predict whether a reaction is likely to occur in each of the following cases. If so, write a net ionic equation for the reaction. (Type your answer using the format H2PO4 for H2PO4, (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients. If no reaction occurs, type "NR" into each answer box in that reaction.)
(a) BaS(aq) + CuSO4(aq)
Answer is not case sensitive.
Ba2+(aq) +
Answer is not case sensitive.
Answer is case sensitive.
(aq) +
Answer is not case sensitive.
Cu2+(aq) +
Answer is not case sensitive.
SO42-(aq)
Answer is not case sensitive.
Answer is case sensitive.
(s) +
Answer is not case sensitive.
CuS(s)
(b) Cr(OH)3(s) + HBr(aq)
Answer is not case sensitive.
Answer is case sensitive.
(s) +
Answer is not case sensitive.
Answer is case sensitive.
(aq)
Answer is not case sensitive.
Answer is case sensitive.
(aq) +
Answer is not case sensitive.
Answer is case sensitive.
(l)
(c) NH3(aq) + H2SO4(aq)
Answer is not case sensitive.
NH3(aq) +
Answer is not case sensitive.
Answer is case sensitive.
(aq)
Answer is not case sensitive.
Answer is case sensitive.
(aq)
(d) MgBr2(aq) + ZnSO4(aq)
Answer is not case sensitive.
Mg2+ +
Answer is not case sensitive.
Answer is case sensitive.
(aq)
Answer is not case sensitive.
Answer is case sensitive.
(aq)
(e) NaOH(aq) + Mg(NO3)2(aq)
Answer is not case sensitive.
OH -(aq) +
Answer is not case sensitive.
Answer is case sensitive.
(aq)
Answer is not case sensitive.
Answer is case sensitive.
(s)


4. –/2 points Notes Question: HPMP4 5.XP.009.
Question part
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Submissions
1 2
0/1 0/1
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0/2
 
State Charles's law in the form of a mathematical equation. Use b as a constant, T for temperature, and p for pressure as necessary
V =
Enter a mathematical expression.

State Charles's law in words.

Click here for help with symbolic formatting.

5. –/3 points Notes Question: HPMP4 7.028.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
0/50 0/50 0/50
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0/3
 
Which of the following ions should exhibit the same mass-to-charge ratios? (Select all that apply.)



Would you expect the ratios to be exactly the same or only approximately so?
    


Explain.

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