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

James Finch

Chemistry - College, section 1, Fall 2011

Instructor: Dr. Friendly

Current Score : 2 / 40

Due : Sunday, October 9, 2011 08:00 EDT

Print Assignment
Question
Points
1 2 3 4 5
2/3 0/1 0/31 0/2 0/3
Total
2/40 (5.0%)

  • 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.

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. 2/3 points All Submissions Notes Question: HPMP4 1.035.
Question part
Points
Submissions
1 2 3
1 1 0/1
1/50 1/50 1/50
Total
2/3
 
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 10-3 g
     Your answer is correct.

(b) 3.76 10-9 m
     Your answer is correct.

(c) 6.34 10-12 g
     Your answer is incorrect.

Your work in question(s) will also be submitted or saved.
2. 0/1 points All Submissions Notes Question: HPMP4 2.022.
Question part
Points
Submissions
1
0/1
1/50
Total
0/1
 
When 0.1122 g of magnesium is heated with 0.1755 g of nitrogen in a closed container, the magnesium is completely converted to 0.1553 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.
Your answer is incorrect. g
Your work in question(s) will also be submitted or saved.
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
Total
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)

Your work in question(s) will also be submitted or saved.
4. –/2 points Notes Question: HPMP4 5.XP.009.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
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.
Your work in question(s) will also be submitted or saved.
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
Total
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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