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Daub and Seese - Basic Chemistry 7e (Homework)

Chris Read

Prentice Hall, section 1, Fall 2010

Instructor: Mr. Prentice Hall

Current Score : 0 / 21

Due : Sunday, September 12, 2010 08:00 PM EDT

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Question
Points
1 2 3 4 5
0/6 0/1 0/8 0/4 0/2
Total
0/21

Description

Here are some textbook questions from Basic Chemistry 7/e by Daub and Seese published by Prentice Hall. 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. –/6 points Notes Question: DSchem7 3.P.003.
Question part
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Classify the following as existing in one of the three physical states of matter at room temperature and atmospheric pressure.
(a) gasoline

(b) water vapor

(c) table salt

(d) methane (natural gas)

(e) paper

(f) antifreeze

2. –/1 points Notes Question: DSchem7 5.P.007.
Question part
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Given are the electronic configurations for four elements. Pair the elements you would expect to show similar chemical properties. (Select all that apply.)
(a) 1s2, 2s2 2p6, 3s2 3p5 3d7, 4s2
(b) 1s2, 2s2 2p6, 3s2
(c) 1s2, 2s2 2p6, 3s2 3p6 3d10, 4s2 4p6 4d7, 5s2
(d) 1s2, 2s2 2p6, 3s2 3p6, 4s2




3. –/8 points Notes Question: DSchem7 7.P.018.
Question part
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Write the correct formula for the "principal" chemical ingredient in each of the following. (Type your answer using the format CO2 for CO2.)
(a) table salt
Answer is case sensitive.
 		(b) muriatic acid
Answer is case sensitive.
(c) oil of vitriol
Answer is case sensitive.
 		(d) ammonia
Answer is case sensitive.
(e) quicklime
Answer is case sensitive.
 		(f) marble
Answer is case sensitive.
(g) laughing gas
Answer is case sensitive.
 		(h) milk of magnesia
Answer is case sensitive.


4. –/4 points Notes Question: DSchem7 12.P.013.
Question part
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Use the graph in Figure 12.4 to determine the following.


Figure 12.4

(a) The boiling point of alcohol at 500 mm Hg (torr).
Enter a number.
°C
(b) The boiling point of water on top of Mt. Whitney, California (14,495 ft); atmospheric pressure is approximately 435 mm Hg (torr).
Enter a number.
°C
(c) The boiling point of water on top of Mt. Everest, Nepal-Tibet border (29,028 ft); atmospheric pressure is approximately 240 mm Hg (torr).
Enter a number.
°C
(d) The boiling point of heptane on top of Mt. Everest.
Enter a number.
°C


5. –/2 points Notes Question: DSchem7 15.P.029.
Question part
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Rain water has a pH of 4.00. Calculate its hydrogen ion concentration in mol/L.
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 mol/L
Explain why the water is acidic instead of neutral.

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