Chemistry 3

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Author:
RJVan
ID:
305659
Filename:
Chemistry 3
Updated:
2016-03-17 17:36:02
Tags:
Chemistry
Folders:
Mechanical Engineering
Description:
Mechanical Professional Engineering Exam Review
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  1. In plain English, what is the simple definition of what a "mole" is?
    A mole is a measure of the amount of a substance.
  2. How is the Specific Gas Constant related to the Universal Gas Constant?
  3. What is the equation of state for an ideal gas in terms of the Universal Gas Constant?
  4. A mole of a substance has a mass equal to what?
    A mole of a substance has a mass equal to its atomic or molecular weight.
  5. The atomic weight of carbon is 12.
    What is a mole of carbon in grams?
    What is a mole of carbon in lbm?
    • 1 gmol = 12.0 grams
    • 1 lbmol = 12.0 lbm
  6. What is the relation ship between mass and number of moles?
  7. What is the equation of state for ideal gases in terms of the Specific Gas Constant?
  8. A solution with a pH below 7 is
    A.acidic
    B.neutral
    C.saturated
    D.basic
    A.acidic
    (this multiple choice question has been scrambled)
  9. A solution with a pH greater than 7 is
    A.acidic
    B.basic
    C.neutral
    D.saturated
    B.basic
    (this multiple choice question has been scrambled)
  10. What is the volume of a pound-mole of an ideal gas?
    359 ft3
  11. What is the molecular weight of oxygen gas?
    32 (O2 = 16+16)
  12. What is the atomic weight of oxygen?
    16
  13. What is the atomic weight of hydrogen?
    1
  14. What is the molecular weight of nitrogen gas?
    28 (N2 = 14+14)
  15. What is the atomic weight of helium?
    4
  16. What is the atomic weight of nitrogen?
    14
  17. What are the primary chemical ingredients used in refrigerants since the Montreal Protocol?
    • Hydrogen
    • Fluorine
    • Carbon
  18. What chemical was eliminated from refrigerants after the Montreal Protocol?
    A. Fluorine
    B. Carbon
    C. Chlorine
    D. Hydrogen
    C. Chlorine
    (this multiple choice question has been scrambled)
  19. Which refrigerant is responsible for ozone depletion?
    A. Both HCFC and HFC
    B. HCFC
    C. HFC
    B. HCFC
    (this multiple choice question has been scrambled)
  20. Which refrigerant is responsible for global warming?
    A. Both HCFC and HFC
    B. HFC
    C. HCFC
    A. Both HCFC and HFC
    (this multiple choice question has been scrambled)

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