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Raymond - General, Organic, & Biological Chem. 2/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 0/22

Due: Tuesday, December 7, 2010 08:00 EST

About this Assignment

Question
Points
1 2 3 4 5
0/8 0/2 0/8 0/2 0/2
Total
0/22

Description

Here are some textbook questions from General, Organic, and Biological Chemistry 2/e by Kenneth W. Raymond published by John Wiley & Sons, Inc. 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. –/8 points Notes Question: RayChem2 2.P.012.
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
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0/8
 
How many protons and neutrons are present in the nucleus of each?
(a) 2411Na (used to detect blood vessel obstruction)
protons
Enter an exact number.

neutrons
Enter an exact number.


(b) 7534Se (used in pancreas scans)
protons
Enter an exact number.

neutrons
Enter an exact number.


(c) 16769Tm (used in bone and tumor scans)
protons
Enter an exact number.

neutrons
Enter an exact number.


(d) 8437Rb (used to measure cardiac output)
protons
Enter an exact number.

neutrons
Enter an exact number.


2. –/2 points Notes Question: RayChem2 3.P.062.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
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0/2
 
The food additive potassium sorbate, K(C6H7O2), is a mold and yeast inhibitor.
(a) What is the charge on the sorbate ion? (Type your answer using the format +1 and -2.)
Answer is not case sensitive.

(b) How many C atoms are present in 0.0142 g of potassium sorbate?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 atoms


3. –/8 points Notes Question: RayChem2 4.P.010.
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
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0/8
 
What is the formal charge on each atom in the following molecules or ions? (Type your answer using the format +1 and -2.)
(a)
C
Answer is not case sensitive.
H (each one)
Answer is not case sensitive.
N
Answer is not case sensitive.

(b)
C
Answer is not case sensitive.
H (each one)
Answer is not case sensitive.
O
Answer is not case sensitive.

(c)
O (each one)
Answer is not case sensitive.
Cl
Answer is not case sensitive.


4. –/2 points Notes Question: RayChem2 6.P.055.
Question part
Points
Submissions
1 2
0/1 0/1
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0/2
 
Many food colors and fabric dyes are manufactured from aniline. Aniline can be produced by the reaction below.
(a) What is the theoretical yield of aniline (in grams), beginning with 142 g of nitrobenzene? (Assume that nitrobenzene is the limiting reactant.)
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 g

(b) Based on the theoretical yield from part a, what is the percent yield if 50.3 g of aniline are obtained?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
%


5. –/2 points Notes Question: RayChem2 11.P.024.
Question part
Points
Submissions
1 2
0/1 0/1
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0/2
 
Isoimpinellin, a naturally occurring ether, is found at very low levels in celery. Tests have shown that at high concentrations this compound can be a carcinogen (cancer-causing agent). This is not cause to avoid eating celery, however, because many foods naturally contain toxic substances at very low levels.

Isoimpinellin
(a) How many ether groups does isoimpinellin contain?
Enter an exact number.


(b) What other functional groups are present in this molecule? (Select all that apply.)



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