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Glencoe Chemistry: Matter and Change 2008 (Homework)

James Finch

Chemistry - HS, section 1st period, Fall 2019

Instructor: Dr. Friendly

Current Score : 13 / 13

Due : Friday, August 23, 2019 16:00 EDT

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5 6
–/1 –/4 –/3 –/1 –/3 –/1
Total
13/13 (100.0%)

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    Here are some textbook questions from Glencoe Chemistry: Matter and Change 2008 published by Glencoe/McGraw-Hill. Click here for a list of all of the questions coded in WebAssign. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

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1. –/1 points GChemMC08 1.STP.002. My Notes
Question Part
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Submissions Used
1
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–/1
 
What must be a constant during the experiment?
    
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2. –/4 points GChemMC08 2.pp.042. My Notes
Question Part
Points
Submissions Used
1 2 3 4
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–/4
 
Complete the following calculations. Round off the answers to the correct number of significant figures.
(a) 35 m ✕ 3.26 m
WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

110

 m2

(b) 120 m ✕ 0.26 m
WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

31

 m2

(c) 1.46 m ✕ 2.0 m
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2.9

 m2

(d) 53.0 m ✕ 2.38 m
WebAssign will check your answer for the correct number of significant figures.(No Response) seenKey

126

 m2
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3. –/3 points GChemMC08 3.ca.077. My Notes
Question Part
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1 2 3
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–/3
 
Carbon reacts with oxygen to form two different compounds. Compound I contains 4.80 g carbon for every 6.41 g of oxygen. Compound II contains 20.18 g carbon for every 53.8 g of oxygen. What is the ratio of carbon to a fixed mass of oxygen for the two compounds?
Compound Mass C (g) Mass O (g) MassC / MassO
I 4.80 6.41 (No Response) seenKey

0.749
II 20.18 53.8 (No Response) seenKey

0.375

mass ratio of compound I / mass ratio of compound II
(No Response) seenKey

2
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4. –/1 points GChemMC08 5.ca.086. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5
–/1 –/0 –/0 –/0 –/0
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–/1
 
Use noble-gas notation to describe the electron configurations of the elements represented by the following symbols.
(a) Sm

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[Xe] 6s2 4f6


(b) Kr

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[Ar] 4s2 3d10 4p6 or [Kr]


(c) P

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[Ne] 3s2 3p3


(d) Zr

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[Kr] 5s2 4d2


(e) W

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[Xe] 6s2 4f14 5d4
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5. –/3 points GChemMC08 5.ca.090.mrv. My Notes
Question Part
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1 2 3
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–/3
 
Draw an electron-dot structure for an atom of each of the following elements.
(a) arsenic
(No Response)
Marvin JS


(b) potassium
(No Response)
Marvin JS


(c) carbon
(No Response)
Marvin JS
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6. –/1 points GChemMC08 6.sa.002. My Notes
Question Part
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–/1
 
Use this simplified version of the periodic table to indicate the location of group VIIIB. (Select all that apply.)
                               
                   
                   
 
               

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