Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 8, Problem 23RQ
Which of the following greases are best suited for lubricating automotive wheel bearings?
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The following chemical reaction takes place at 500K and 1 atm and the products leaves at 1000K aCH4 + b(O2 + 3.76N2)=7.7CO2 + 0.5CO + 2CH4+2.95O2 + 86.85N2 + cH2O use the specific heat capacity given in Table A-21 (Moran and Shapiro, page 755) and the heat of formation given in Tabble A-25 (Moran and Shapiro, page 763) determine: 1. The stoichiometric coefficients (a, b, and c) 2. The air-fuel ratio on a molar basis 3. The air-fuel ratio on a mass basis 4. The stoichiometric air fuel ratio 5. The excess air (%) 6. The lower heating value 7. The rate of heat transfer from the combustion chamber.
3. Nitric oxide is produced in the body by several different enzymes and acts as a
signal that controls blood pressure, long-term memory, and other critical functions.
The major route for removing NO from biological fluids is via reaction with O2 to
give NO₂
2NO(g) + O2(g) → 2NO2(g)
The following table lists kinetics data for the reaction of NO with O2 at 25°C:
Experiment
1
[NO] (M)
0.0235
2
0.0235
3
0.0470
4
0.0470
(a) Determine the rate law for the reaction
(b) calculate the rate constant.
[02]0 (M)
Initial Rate (M/s)
0.0125
7.98 × 10-3
0.0250
15.9 × 10-3
0.0125
32.0 × 10-3
0.0250
63.5 x 10-3
5:32
A closed system of 122 moles of an ideal gas with constant-pressure heat capacity of cp = 2.5R expands isobarically from 52°C and 4.9 bar to 137°C, with a thermodynamic efficiency of 0.74.
How much total work is involved in this process?
Please report your answer to the nearest whole kJ and don't forget the sign: "-" if the work is negative, no sign if the work is positive.
Chapter 8 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 8 - Describe the information found in a VIN.Ch. 8 - Technician A stresses the need to follow the...Ch. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - True or False? Legally, an RO protects the shop...Ch. 8 - While examining the color of an engines coolant:...Ch. 8 - While checking the condition of a vehicles ATF:...Ch. 8 - Technician A says that if a drive belt does not...Ch. 8 - List five different types of oil rating systems.Ch. 8 - Technician A says that to accurately check brake...
Ch. 8 - Why should you wipe off the outside of a zerk...Ch. 8 - True or False? All engine coolants contain some...Ch. 8 - List at least five things that should be checked...Ch. 8 - True or False? If brake fluid is dark or brown...Ch. 8 - Which of the following statements about drive belt...Ch. 8 - Prob. 16RQCh. 8 - Which of the following statements about an oils...Ch. 8 - While discussing a vehicles maintenance program:...Ch. 8 - Which of the following is not a true statement...Ch. 8 - True or False? An oil with the classification of...Ch. 8 - While discussing the effects of overtorquing wheel...Ch. 8 - The most commonly used brake fluid in domestic...Ch. 8 - Which of the following greases are best suited for...Ch. 8 - While discussing the special preventive...Ch. 8 - How does a technician determine the proper...
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BEARINGS BASICS and Bearing Life for Mechanical Design in 10 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=aU4CVZo3wgk;License: Standard Youtube License