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Zumdahl and Zumdahl - Chemistry 7/e (Homework)

James Finch

Chemistry - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 11 / 17

Due : Thursday, April 16, 2020 08:00 EDT

Last Saved : n/a Saving...  ()

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–/1 –/2 –/1 –/1 –/1 –/2 –/1 –/2
Total
11/17 (64.7%)

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    Here are some textbook questions from Chemistry 7/e by Zumdahl and Zumdahl 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. –/1 points ZumChem7 1.E.057. My Notes
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Diamonds are measured in carats, and 1 carat = 0.200 g. The density of diamond is 3.51 g/cm3. What is the volume of 4.50 carat diamond?
WebAssign will check your answer for the correct number of significant figures.(No Response) cm3
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2. –/2 points ZumChem7 5.E.041. My Notes
Question Part
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Submissions Used
1 2
–/1 –/1
0/50 0/50
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–/2
 
A 2.43-L container is filled with 174 g argon.
(a) If the pressure is 10.0 atm, what is the temperature?
WebAssign will check your answer for the correct number of significant figures.(No Response) K

(b) If the temperature is 225 K, what is the pressure?
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3. –/1 points ZumChem7 6.E.028. My Notes
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1
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As a system increases in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0 L. What was the initial volume of the system if the internal energy of the system decreased by 103.7 J?
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4. –/1 points ZumChem7 6.E.051. My Notes
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1
–/1
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–/1
 
In a coffee-cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M HCl are mixed to yield the following reaction.
Ag+(aq) + Cl −(aq) AgCl(s)
The two solutions were initially at 22.31°C, and the final temperature is 23.65°C. Calculate the heat that accompanies this reaction in kJ/mol of AgCl formed. Assume that the combined solution has a mass of 100.0 g and has a specific heat capacity of 4.18 J/°C · g.
WebAssign will check your answer for the correct number of significant figures.(No Response) kJ/mol
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5. –/1 points ZumChem7 7.E.043. My Notes
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1
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–/1
 
A particle has a velocity that is 90.% of the speed of light. If the wavelength of the particle is 2.6 10-15 m, calculate the mass of the particle.
WebAssign will check your answer for the correct number of significant figures.(No Response) kg
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6. –/2 points ZumChem7 7.E.109. My Notes
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1 2
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Complete and balance the equations for the following reactions. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.)
(a) Rb(s) + Cl2(g) →

chemPad

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(b) Na(s) + Cl2(g) →

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7. –/1 points ZumChem7 8.E.058. My Notes
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1
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Use bond energies to estimate ΔH for the combustion for seven moles of acetylene.
C2H2(g) + 5/2 O2(g) → 2 CO2(g) + H2O(g)
(No Response) kJ
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8. –/2 points ZumChem7 11.E.032. My Notes
Question Part
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Calculate the molarity and mole fraction of acetone in a 1.20 m solution of acetone (CH3COCH3) in ethanol (C2H5OH). (Density of acetone = 0.788 g/cm3; density of ethanol = 0.789 g/cm3.) Assume that the volumes of acetone and ethanol add.
molarity
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mole fraction
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