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 7, Problem 20RQ
List at least five precautions that must be adhered to while working on a vehicle with a high-voltage system.
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Question #6
a) Draw a simple block flow diagram of a petroleum refinery consisting of
following sections.
1. Atmospheric and vacuum distillation
2. Hydrotreating of diesel steam
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Show main product streams from each unit.
(8)
Phosphate often needs to be removed from wastewater because it will cause eutrophication of
receiving waters. At the Paso Robles Wastewater Treatment plant, they add MgCl2 to the pressate
(concentrated liquid pressed from sludge) to precipitate phosphate as the mineral struvite. Struvite is
formed by the reaction of phosphate with magnesium ions and ammonium, and the solubility product for
struvite is 5.5x10-14. The ammonium concentration is very high at 300 mg N-NH4/L because the sludge
is coming from an anaerobic digester. What minimum amount of MgCl2 (in mg/L) would be needed to
precipitate all but 1 mg/L phosphate? Struvite precipitates by the following reaction:
Mg++NH] +PO →MgNH PO
4
4
4
·
What is the pH of the following solutions?
a) 1.0 M HCI (strong acid)
b) 50 mg/L NaOH (strong base)
• c) 0.10 M acetic acid (Ka = 1.75x10-5)
Chapter 7 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 7 - What is the correct way to dispose of used oil...Ch. 7 - Where in the shop should a list of emergency...Ch. 7 - Which of the following offer(s) the least...Ch. 7 - Which of the following statements about latex and...Ch. 7 - Describe the correct process for lifting a heavy...Ch. 7 - What are bloodborne pathogens and why should...Ch. 7 - List at least five things you should remember when...Ch. 7 - List at least five precautions that must be...Ch. 7 - How should a class B fire be extinguished?Ch. 7 - Where can complete EPA lists of hazardous wastes...
Ch. 7 - Which of the following statements about safety...Ch. 7 - Gasoline is highly volatile highly flammable...Ch. 7 - Technician A says that it is recommended that you...Ch. 7 - Technician A says that used engine coolant should...Ch. 7 - There are many ways to clean parts while they are...Ch. 7 - Federal Right-To-Know Laws concern. auto emission...Ch. 7 - Which of the following is/are important when work...Ch. 7 - Technician A says that the volatility of a...Ch. 7 - Which of the following is not recommended for use...Ch. 7 - List at least five precautions that must be...Ch. 7 - What is the correct procedure for using a fire...Ch. 7 - Technician A ties his long hair behind his head...Ch. 7 - Technician A uses compressed air to blow dirt from...Ch. 7 - Heavy protective gloves should be worn when....Ch. 7 - Proper disposal of oil filters includes. recycling...
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