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Stoker - General, Organic, and Biological Chem 4/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 21/26

Due: Saturday, January 29, 2011 07:00 EST

About this Assignment

Question
Points
1 2 3 4 5 6
4 12 2/4 2 1/2 0/2
Total
21/26

Description

Here are some textbook questions from General, Organic, and Biological Chemistry 4/e by H. Stephen Stoker published by Brooks/Cole. 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. 4/4 points All Submissions Notes Question: StokerGOB4 1.P.014.
Question part
Points
Submissions
1 2 3 4
1 1 1 1
1/50 1/50 1/50 1/50
Total
4/4
 
Correctly complete each of the following sentences by placing the word chemical or physical in the blank.
(a) The fashioning of a piece of wood into a round table leg involves a
Answer is not case sensitive.
Your answer is correct. procedure.

(b) The heating of a blue powdered material to produce a white glassy-type substance and a gas is a
Answer is not case sensitive.
Your answer is correct. procedure.

(c) The grating of a piece of cheese is a
Answer is not case sensitive.
Your answer is correct. technique.

(d) The ignition and burning of a match involves a
Answer is not case sensitive.
Your answer is correct. process.

Read the eBook
1.4: Changes in Matter

2. 12/12 points All Submissions Notes Question: StokerGOB4 2.P.006.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9 10 11 12
1 1 1 1 1 1 1 1 1 1 1 1
1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50
Total
12/12
 
Arrange each of the following from smallest to largest.
(a) nanoliter, milliliter, centiliter
Your answer is correct. < Your answer is correct. < Your answer is correct.

(b) micrometer, picometer, kilometer
Your answer is correct. < Your answer is correct. < Your answer is correct.

(c) megaliter, picoliter, deciliter
Your answer is correct. < Your answer is correct. < Your answer is correct.

(d) milliliter, gigaliter, microliter
Your answer is correct. < Your answer is correct. < Your answer is correct.

3. 2/4 points All Submissions Notes Question: StokerGOB4 4.P.052.
Question part
Points
Submissions
1 2 3 4
1 1 0/1 0/1
3/50 3/50 1/50 1/50
Total
2/4
 
With the help of this table, write chemical formulas (including charge) for each of the following polyatomic ions.
(a) Perchlorate
Answer is case sensitive.
Your answer is correct.

(b) Nitrate
Answer is case sensitive.
Your answer is correct.

(c) Ammonium
Answer is case sensitive.
Your answer is incorrect.

(d) Permanganate
Answer is case sensitive.
Your answer is incorrect.


4. 2/2 points All Submissions Notes Question: StokerGOB4 5.P.006.
Question part
Points
Submissions
1 2
1 1
1/50 1/50
Total
2/2
 
Specify the number of single, double, and triple covalent bonds present in molecules represented by the following Lewis structures. (Select all that apply.)
(a)

Your answer is correct.




(b)

Your answer is correct.




5. 1/2 points All Submissions Notes Question: StokerGOB4 6.P.002.
Question part
Points
Submissions
1 2
1 0/1
6/50 0/50
Total
1/2
 
Calculate, to two decimal places, the formula mass of each of the following substances. Obtain the needed atomic masses from a periodic table of elements.
(a) C8H10N4O2 (caffeine, a central nervous system stimulant)
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. amu

(b) C14H9Cl5 (DDT, formerly used as an insecticide)
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 amu

Read the eBook
6.1: Formula Masses

6. –/2 points Notes Question: StokerGOB4 16.P.044.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Give the IUPAC name for each of the following carboxylic acid salts.
(a)
Answer is not case sensitive.


(b)
Answer is not case sensitive.

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