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Kotz et al - Chemistry&Chemical Reactivity 7/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 25/29

Due: Saturday, October 23, 2010 08:00 EDT

About this Assignment

Question
Points
1 2 3 4 5 6 7 8
9 5 6 0/1 4 0/1 0/2 1
Total
25/29

Description

Chemistry & Chemical Reactivity 7/e by John C. Kotz, Paul M. Treichel, and John Townsend published by Brooks/Cole Publishing now has animations with conceptual questions and tutorial problems offering feedback and hints to guide student content mastery, as well as over 800 end-of-chapter questions. You can check out a sampling of this exciting development below. WebAssign is the most utilized homework system in chemistry. Designed by teachers for teachers, WebAssign is easy to use, reliable -- a trusted companion to your teaching. Sign up for a Test Drive today!

Question 1, 2, and 3 are traditional end-of-chapter questions with randomized chemical values chosen from an array of values.

Question 4 is a structured Tutorial Question that offers feedback to the student at each stage of the solution..

Question 5 is a balancing a chemical reaction question with randomized compounds from an array.

Question 6 is a Simulation Question modeling a redox reaction to help a student visualize equilibria and limiting reagents.

Question 7 is an algorithmic, randomized end-of-chapter question that checks for significant figures.

Question 8 is a multiple correct answer question, randomized so not all students have the same question.

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. 9/9 points All Submissions Notes Question: KT7 2.P.005.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9
1 1 1 1 1 1 1 1 1
2/50 2/50 2/50 1/50 1/50 2/50 1/50 1/50 2/50
Total
9/9
 
How many electrons, protons, and neutrons are there in the following atoms?
(a) aluminum-27, 27Al (b) titanium-48, 48Ti (c) lead-207, 207Pb
electrons
Enter an exact number.
Your answer is correct.
protons
Enter an exact number.
Your answer is correct.
neutrons
Enter an exact number.
Your answer is correct.		 electrons
Enter an exact number.
Your answer is correct.
protons
Enter an exact number.
Your answer is correct.
neutrons
Enter an exact number.
Your answer is correct.		 electrons
Enter an exact number.
Your answer is correct.
protons
Enter an exact number.
Your answer is correct.
neutrons
Enter an exact number.
Your answer is correct.


2. 5/5 points All Submissions Notes Question: KT7 2.P.043.
Question part
Points
Submissions
1 2 3 4 5
1 1 1 1 1
1/50 1/50 1/50 1/50 1/50
Total
5/5
 
Give the formula for each of the following ionic compounds. (Type your answer using the format CH4 for CH4.)
(a) silver(I) acetate
Answer is case sensitive.
Your answer is correct.

(b) calcium hydrogen carbonate
Answer is case sensitive.
Your answer is correct.

(c) ammonium carbonate
Answer is case sensitive.
Your answer is correct.

(d) magnesium perchlorate
Answer is case sensitive.
Your answer is correct.

(e) sodium sulfate
Answer is case sensitive.
Your answer is correct.


3. 6/6 points All Submissions Notes Question: KT7 2.P.030.
Question part
Points
Submissions
1 2 3 4 5 6
1 1 1 1 1 1
5/50 1/50 1/50 1/50 3/50 3/50
Total
6/6
 
Give the symbol, including the correct charge, for each of the following ions. (Type your answer using the format [NO3]- for NO3-.)
(a) sulfite ion
Answer is case sensitive.
Your answer is correct.
 (b) chlorite ion
Answer is case sensitive.
Your answer is correct.
 (c) dihydrogen phosphate ion
Answer is case sensitive.
Your answer is correct.
(d) permanganate ion
Answer is case sensitive.
Your answer is correct.
 (e) chromate ion
Answer is case sensitive.
Your answer is correct.
 (f) phosphate ion
Answer is case sensitive.
Your answer is correct.


4. –/1 points Notes Question: KT7 4.Tut.Balancing Chemical Equations.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 



5. 4/4 points All Submissions Notes Question: KT7 3.P.030.
Question part
Points
Submissions
1 2 3 4
1 1 1 1
1/50 1/50 1/50 1/50
Total
4/4
 
Write a balanced equation for the reaction of ammonium hydroxide with sulfuric acid. (Type your answer using the format H2O for H2O and (NH4)2CO3 for (NH4)2CO3. Use the lowest possible coefficients.)
Answer is case sensitive.
Your answer is correct.(aq) +
Answer is case sensitive.
Your answer is correct.(aq)
Answer is case sensitive.
Your answer is correct.(aq) +
Answer is case sensitive.
Your answer is correct.(l)

6. –/1 points Notes Question: KT7 4.EX.Limiting Reactants: Redox Reactions.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 



7. –/2 points Notes Question: KT7 4.P.001.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Aluminum reacts with oxygen to give aluminum oxide.
4 Al(s)+ 3 O2(g) 2 Al2O3(s)
What amount of O2 in moles is needed for complete reaction with 4.0 mol of Al?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 mol
What mass of Al2O3, in grams, can be produced?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 g

8. 1/1 points All Submissions Notes Question: KT7 6.P.029.
Question part
Points
Submissions
1
1
2/50
Total
1/1
 
A possible excited state of the H atom has the electron in a 4p orbital. Select all possible sets of quantum numbers n, script i, and mscript i for this electron. (Select all that apply.)

Your answer is correct.



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