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Ebbing and Gammon - General Chemistry 8/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 9 / 13

Due : Monday, September 9, 2019 08:00 EDT

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5
–/4 –/3 –/1 –/3 –/2
Total
9/13 (69.2%)

  • Instructions

    Here are some textbook questions from General Chemistry 8/e by Ebbing and Gammon published by Brooks/Cole. 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.

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1. –/4 points EbGam8 3.PP.022. My Notes
Question Part
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–/4
 
Find the formula weights of the following substances to three significant figures.
(a) acetic acid, HC2H3O2
WebAssign will check your answer for the correct number of significant figures.(No Response) amu
(b) phosphorus pentachloride, PCl5
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(c) potassium sulfate, K2SO4
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(d) calcium hydroxide, Ca(OH)2
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2. –/3 points EbGam8 3.PP.087. My Notes
Question Part
Points
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1 2 3
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–/3
 
Methanol, CH3OH, is prepared industrially from the gas-phase catalytic reaction that has been depicted here using molecular models.

In a laboratory test, a reaction vessel was filled with 33.5 g CO and 11.7 g H2.
How many grams of methanol would be produced in a complete reaction?
WebAssign will check your answer for the correct number of significant figures.(No Response) g Which reactant remains unconsumed at the end of the reaction?
    

How many grams of it remain?
WebAssign will check your answer for the correct number of significant figures.(No Response) g
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3. –/1 points EbGam8 5.PP.031. My Notes
Question Part
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1
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–/1
 
A gas in a closed-tube manometer (Figure 5.4) has a measured pressure of 0.051 atm. Calculate the pressure in mmHg.
WebAssign will check your answer for the correct number of significant figures.(No Response) mmHg


Figure 5.4

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4. –/3 points EbGam8 9.PP.049. My Notes
Question Part
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1 2 3
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–/3
 
Using a periodic table (not Figure 9.15), arrange the following in order of increasing electronegativity. (List the atomic symbols from least to most electronegative, separated by commas.)
(a) B, F, N
(No Response)
(b) Si, S, Al
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(c) N, Al, Si
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5. –/2 points EbGam8 10.PP.037. My Notes
Question Part
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–/2
 
(a) The molecule AsF3 has a dipole moment of 2.59 D. Which of the following geometries are possible? (Select all that apply.)

(b) The molecule H2S has a dipole moment of 0.97 D. Is the geometry linear or bent?
    
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