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Burdge and Overby - Chemistry: Atoms First 2/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 14 / 19

Due : Thursday, August 29, 2019 08:00 EDT

Last Saved : n/a Saving...  ()

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14/19 (73.7%)

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    Chemistry: Atoms First 2/e by Julia Burdge and Jason Overby published by McGraw-Hill Higher Education is fully supported by the WebAssign online homework and assessment system.

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1. –/3 points BurdgeAtoms2 5.P.066. My Notes
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–/3
 
Calculate the molecular mass (in amu) of each of the following substances.
(a) H2SO4
(No Response) amu

(b) C6H6
(No Response) amu

(c) N2O5
(No Response) amu

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2. –/2 points BurdgeAtoms2 5.P.099. My Notes
Question Part
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–/2
 
The formula for lithium oxide is Li2O. What are the formulas for sodium oxide and potassium oxide?
sodium oxide

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potassium oxide

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3. –/6 points BurdgeAtoms2 5.P.107. My Notes
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–/6
 
Which of the following compounds are likely to be ionic? Which are likely to be molecular?
(a) B2H6
    
(b) BaCl2
    
(c) SiCl4
    
(d) LiF
    
(e) C2H4
    
(f) NaBr
    

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4. –/1 points BurdgeAtoms2 5.P.118. My Notes
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–/1
 
The atomic mass of element X is 33.42 amu. A 24.12-g sample of X combines with 78.05 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
WebAssign will check your answer for the correct number of significant figures.(No Response) amu

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5. –/2 points BurdgeAtoms2 5.P.121. My Notes
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–/2
 
Which of the following are ionic compounds? (Select all that apply.)

Which are covalent compounds?

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6. –/3 points BurdgeAtoms2 6.P.081. My Notes
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–/3
 
Draw Lewis structures for the following chlorofluorocarbons (CFCs), which are partly responsible for the depletion of ozone in the stratosphere. (Assign atomic charges where appropriate.)
(a) CF2Cl2
(No Response)
(b) CF3CHF2
(No Response)
(c) CFCl3
(No Response)

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7. –/2 points BurdgeAtoms2 15.P.036. My Notes
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–/2
 
The following equilibrium constants were determined at 1123 K.
C(s) + CO2(g) equilibrium reaction arrow 2 CO(g)     K'P = 1.3 1014
CO(g) + Cl2(g) equilibrium reaction arrow COCl2(g)     K"P = 6.0 10-3
Write the equilibrium constant expression KP for the following reaction. (Pressure equilibrium expressions take the general form: Kp = pCc / pAa . pBb. Subscripts and superscripts that include letters must be enclosed in braces {}.)
C(s) + CO2(g) + 2 Cl2(g) equilibrium reaction arrow 2 COCl2(g)

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Calculate the equilibrium constant at 1123 K.
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