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Burdge - Chemistry 2/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2011

Instructor: Dr. Friendly

Current Score : 5 / 26

Due : Monday, August 29, 2011 08:00 EDT

Print Assignment
Question
Points
1 2 3 4 5 6 7
4/5 1/5 0/1 0/2 0/4 0/1 0/8
Total
5/26 (19.2%)

  • Description

    Chemistry 2/e by Julia Burdge published by McGraw-Hill Higher Education features over 4500 questions. Questions include animations with conceptual questions, tutorial problems offering feedback and hints to guide student content mastery, a collection of over 1150 end-of-chapter questions, a complete test bank, and additional supplemental problems. You can check out a sampling of this exciting development below. 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 13, for example, is directly related to Exercise 13.

    Question 3 is an algorithmic end-of-chapter problem using the chemPad answer entry palette. With chemPad, students receive intelligent feedback based on their incorrect answers.

    Question 4 is a typical end of chapter problem, using significant figure rules and providing feedback for incorrect answers.

    Question 5 is an algorithmic end-of-chapter problem requiring students to use the MarvinSketch tool to draw and submit structures for instant grading.

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

    Question 7 is a question from the textbook's testbank.

  • Instructions

    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, 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. 4/5 points All Submissions Notes Question: BurdgeChem2 3.Animation.02.
Question part
Points
Submissions
1 2 3 4 5
1 1 0/1 1 1
1/50 1/50 1/50 1/50 1/50
Total
4/5
 
Stoichiometry Use the animation to answer the following questions.
clear dot clear dot clear dot
clear dot clear dot
clear dot
clear dot
clear dot
(a) In the reaction of H2 with O2, if the maximum amount of O2 is used:
     Your answer is correct.


(b) In the reaction of H2 with O2, if 6 moles of H2 molecules are used:
     Your answer is correct.


(c) When H2 reacts with I2, as the number of moles of product increases:
     Your answer is incorrect.


(d) In the reaction producing HI, if 768 grams of HI form:
     Your answer is correct.


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

Your work in question(s) will also be submitted or saved.
2. 1/5 points All Submissions Notes Question: BurdgeChem2 1.PracticeEx.06.
Question part
Points
Submissions
1 2 3 4 5
1 0/1 0/1 0/1 0/1
1/50 0/50 0/50 0/50 0/50
Total
1/5
 
Practice Exercise 1.6 about this problem
Perform the following arithmetic operations and round off the answers to the appropriate number of significant figures.
(a) 106.5 L + 10.50 L
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 correct. L

(b) (81.033 m) - (0.28 m)
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 m

(c) 3.824 1021 atoms + 1.255 1019 atoms
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 atoms

(d) (1.247 dm) multiplied by (30. dm)
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 dm

(e) 160. g ÷ 275.74 mL
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 g/mL
HINTS
I'm Stuck

Your work in question(s) will also be submitted or saved.
3. 0/1 points All Submissions Notes Question: BurdgeChem2 6.EOCP.090.
Question part
Points
Submissions
1
0/1
1/50
Total
0/1
 
Use the Aufbau principle to obtain the ground-state electron configuration of technetium.

chemPad

Help

 

Your work in question(s) will also be submitted or saved.
4. –/2 points Notes Question: BurdgeChem2 3.EOCP.094.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas.
2 NO(g) + O2(g) → 2 NO2(g)
In one experiment 0.723 mole of NO is mixed with 0.405 mole of O2.
Determine which of the two reactants is the limiting reactant.
    

Calculate also the number of moles of NO2 produced.
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 mole
Your work in question(s) will also be submitted or saved.
5. –/4 points Notes Question: BurdgeChem2 8.EOCP.116.
Question part
Points
Submissions
1 2 3 4
0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50
Total
0/4
 
Draw Lewis structures for the following organic molecules. (Assign atomic charges where appropriate.)
(a) tetraethyllead [Pb(CH2CH3)4], which is used in ''leaded gasoline''

MarvinSketch

Help

  1. Click Open MarvinSketch.
  2. Use MarvinSketch to draw the
    chemical structure.
  3. Click Finished when you are done.
Open MarvinSketch


(b) methylamine (CH3NH2), which is used in tanning

MarvinSketch

Help

  1. Click Open MarvinSketch.
  2. Use MarvinSketch to draw the
    chemical structure.
  3. Click Finished when you are done.
Open MarvinSketch


(c) glycine (NH2CH2COOH), an amino acid

MarvinSketch

Help

  1. Click Open MarvinSketch.
  2. Use MarvinSketch to draw the
    chemical structure.
  3. Click Finished when you are done.
Open MarvinSketch


(d) ethanol (CH3CH2OH)

MarvinSketch

Help

  1. Click Open MarvinSketch.
  2. Use MarvinSketch to draw the
    chemical structure.
  3. Click Finished when you are done.
Open MarvinSketch

Your work in question(s) will also be submitted or saved.
6. –/1 points Notes Question: BurdgeChem2 3.Supp.7-09.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
Which of the following chemical equations is NOT balanced?
    

Your work in question(s) will also be submitted or saved.
7. –/8 points Notes Question: BurdgeChem2 3.TB.115.
Question part
Points
Submissions
1 2 3 4 5 6 7 8
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
Total
0/8
 
Refer to the (unbalanced) equation:
(a) Balance this equation.
Answer is not case sensitive.
CS2 +
Answer is not case sensitive.
CaO →
Answer is not case sensitive.
CO2 +
Answer is not case sensitive.
CaS

(b) How many moles of CO2 can be obtained from the reaction of 4 moles of CS2?
Answer is not case sensitive.


(c) How many moles of CaO are consumed if 0.3 mole CS2 reacts?
Enter a number.
 moles

(d) How many grams of CaS are produced if 53 g of CO2 are produced?
Enter a number.
 g

(e) How many grams of CaO are required to react completely with 38 g of CS2?
Enter a number.
 g

Your work in question(s) will also be submitted or saved.
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