Electricity for Refrigeration, Heating, and Air Conditioning
9th Edition
ISBN: 9781285179988
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 2, Problem 7RQ
Which of the following is the simplest atom that exists?
- a. carbon
- b. hydrogen
- c. oxygen
- d. sulfur
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5. Which ONE of the following substances is LEAST ionic?
a. NaCl
b. KCI
c. CuCl2
d. SbCl4
6. Calculate the difference in electronegativity (AEN) for the bonds that would form between the
groups of atoms listed below. State whether the bond would be ionic, polar covalent or non-polar
covalent.
a. N and Cl
b. B and Br
c. B and F
d. Al and O
e. N and F
Chemical energy refers to the energy associated with the bonds within nucleus of atom itself.
Select one:
True
False
6. Choose correct sentences
(Ionic bond)
a. Water molecule, ammonia molecules
b. Graphenes bonding forces in graphite
c. Sodium chloride
(Ionic bond)
d. Carbon, silicon, germanium
e. Diamond
(Hydrogen bond solids)
(Van der waals bond)
(Covalent bond)
7. (Choose incorrect sentences)
a. Interstitial Alloys are metal alloys formed by substituting one metal atom for another
metal atom of similar size.
a. Substitutional Alloys are metal alloys formed by inserting smaller atoms into holes of
the metal lattice.
c. None
8. To relieve internal stress in heat treatment techniques is obtained at:
a. Annealing
b. Normalizing
c. Hardening
d. Tampering
e. Curborization
f. Quenching
9. When the angle of misorientation is parallel the boundary due to an array of screw
dislocation it's called:
a. Grain structure
b. Tilt boundary
c. Grain boundaries
d. Twist boundary
e. Stacking faults
Chapter 2 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning
Ch. 2 - All physical objects are composed of __________....Ch. 2 - What is an atom?Ch. 2 - Which of the following is a part of the atom? a....Ch. 2 - What is static electricity?Ch. 2 - Name three ways electricity can be produced.Ch. 2 - What part do protons and electrons play in the...Ch. 2 - Which of the following is the simplest atom that...Ch. 2 - What are the four most important characteristics...Ch. 2 - What is electromotive force?Ch. 2 - Electromotive force is commonly measured in _____....
Ch. 2 - What is current?Ch. 2 - How is current measured? a. amperes b. ohms c....Ch. 2 - What is resistance?Ch. 2 - How is resistance commonly measured? a. amperes b....Ch. 2 - What is electrical power?Ch. 2 - How is electrical power commonly measured? a....Ch. 2 - Where do electrons exist in an atom, and what is...Ch. 2 - True or False: All atoms tend to lose electrons.Ch. 2 - State the law of electric charges.Ch. 2 - What is a proton? Where does it normally exist in...Ch. 2 - Describe briefly the method a dry cell battery...Ch. 2 - What is a conductor?Ch. 2 - Which of the following is the best conductor? a....Ch. 2 - What is an insulator?Ch. 2 - Which of the following is the best insulator? a....Ch. 2 - Why do metals make the best conductors?Ch. 2 - How do electric utility companies charge customers...Ch. 2 - What is the meaning of SEER when used in...Ch. 2 - State Ohms law.Ch. 2 - True or False: Ohms law applies to all types of...Ch. 2 - What is the ampere draw of a 5000-watt electric...Ch. 2 - What is the resistance of the heating element of...Ch. 2 - What is the voltage of a small electric heater if...Ch. 2 - What is the Btu/hour output of an electric heater...Ch. 2 - What is the kilowatt output of an electric heater...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Which of the statements about hydrogen is true? a. A hydrogen atom is one proton and two electrons. b. Hydrogen is one of the heaviest elements known and is full of energy. c. Fossil fuels are combinations of carbon and hydrogen. d. Hydrogen is produced in a fuel cell when water is broken down into its basic elements.arrow_forwardIn the electron arrangement of a calcium atom, how many electrons are in the second energy level? Plz solvearrow_forwardWhich of the following element revolves around the nucleus in an atom a. Neutrons b. Protons c. Neutrons and Protons d. Electronsarrow_forward
- Determine the refrigerant name, chemical formula and the no. of fluorine, carbon, and hydrogen atoms for the following hydrocarbons/halocarbons: o R-23 o R-131 o Monochlorotetrafluoroethanearrow_forward6. Choose correct sentences a. Water molecule, ammonia molecules b. Graphenes bonding forces in graphite c. Sodium chloride (lonic bond) (lonic bond) d. Carbon, silicon, germanium e. Diamond (Hydrogen bond solids) (Van der Waals bond) (Covalent bondi 7. (Choose incorrect sentences) a Interstitial Alloys are metal alloys formed by substituting one metal atom for another metal atom of similar size. a. Substitutional Alloys are metall alloys formed by inserting smaller atoms into boles of the metal lattice c. Nomearrow_forwardtrue or false Chemical energy refers to the energy associated with molecular bonds.arrow_forward
- For APF, Which one of the following is the assumption a. The atoms overlap b. The atoms are rigid cubes c. The atoms do not overlap d. The atoms are not rigid spheresarrow_forwardWhen this part of an atom moves to another atom, the losing atom will have a ______charge. A. negative B. positive C. neutralarrow_forwardWhich type of bonding between atoms is characterized by the sharing of electrons between two or more atoms? Covalent Ionic Metallic Van Der Waals Please answer the question in the image (explantion not needed)arrow_forward
- Can you calculate the volume of allen bolt.arrow_forwardIDENTIFY THE NUMBER OF ATOMS (CL, C, H, and F) in the Refrigerant R111arrow_forwardThe letter standard by ASTM to indicate miscellaneous subjects is O a. E O b. C O c D O d. A A net total of four atoms is found in the unit cell of O a. Face centered cubic space lattice O b. Body centered cubic space lattice O c. Hexagonally close packed space lattice O d. None of thesearrow_forward
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