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Kotz & Treichel - Chemistry&Chemical Reactivity 5e (Homework)

James Finch

Chemistry - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 0/18

Due: Saturday, October 23, 2010 09:00 EDT

About this Assignment

Question
Points
1 2 3 4 5
0/2 0/3 0/5 0/1 0/7
Total
0/18

Description

Here are some textbook questions from Chemistry & Chemical Reactivity 5/e by Kotz and Treichel published by Brooks/Cole Publishing. 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. 0/2 points All Submissions Notes Question: KT5 1.P.053.
Question part
Points
Submissions
1 2
0/1 0/1
1/50 1/50
Total
0/2
 
The separation between carbon atoms in diamond is 0.154 nm.

(a) What is their separation in meters?
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.

1.54e-10

 m
(b) What is the carbon atom separation in angstrom units (where 1 = 1 10-10 m)?
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.

1.54


2. –/3 points Notes Question: KT5 2.P.020.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
0/50 0/50 0/50
Total
0/3
 
Give the mass number of each of the following atoms.
(a) cobalt with 32 neutrons
Enter an exact number.

(b) titanium with 26 neutrons
Enter an exact number.

(c) germanium with 40 neutrons
Enter an exact number.


3. –/5 points Notes Question: KT5 3.P.043.
Question part
Points
Submissions
1 2 3 4 5
0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50
Total
0/5
 
Give the formula for each of the following nonmetal compounds. (Type your answer using the format CO2 for CO2.)
(a) dinitrogen tetraoxide
Answer is case sensitive.

(b) tetraphosphorus trisulfide
Answer is case sensitive.

(c) butane
Answer is case sensitive.

(d) sulfur hexafluoride
Answer is case sensitive.

(e) hydrazine
Answer is case sensitive.


4. –/1 points Notes Question: KT5 4.P.047.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 
If 20.0 g of carbon is combined with an exact, stoichiometric amount of oxygen (53.3 g) to produce carbon dioxide, what is the theoretical yield of CO2 (in grams)?
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 g

5. –/7 points Notes Question: KT5 5.P.034.
Question part
Points
Submissions
1 2 3 4 5 6 7
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
Total
0/7
 
Write a balanced equation for the ionization of nitric acid in water. (Type your answer using the format [PO4]3- for PO43-. Use the lowest possible coefficients.)
Answer is not case sensitive.
Answer is case sensitive.
(aq) +
Answer is not case sensitive.
Answer is case sensitive.
(l)
Answer is not case sensitive.
Answer is case sensitive.
(aq) +
Answer is not case sensitive.
NO3-(aq)
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