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1. What are the simplest whole-number coefficients that balance this equation?
. . . C4H10 + . . . O2 → . . . CO2 + . . . H2O
A. 1, 6, 4, 2B. 2, 13, 8, 10C. 1, 6, 1, 5D. 3, 10, 16, 20E. 4, 26, 16, 20
2. How many atoms are present in the formula KAl(SO4)2?
A. 7B. 9C. 11D. 12E. 13
3. All of the following are compounds EXCEPT
A. copper sulfateB. carbon dioxideC. washing sodaD. airE. lime
4. What volume of gas, in liters, would 2 moles of hydrogen occupy at STP?
A. 11.2B. 22.4C. 33.6D. 44.8E. 67.2
5. What is the maximum number of electrons held in the d orbitals?
A. 2B. 6C. 8D. 10E. 14
6. If an element has an atomic number of 11, it will combine most readily with an element that has an electron configuration of
A. 1s2 2s2 2p6 3s2 3p1B. 1s2 2s2 2p6 3s2 3p2C. 1s2 2s2 2p6 3s2 3p3D. 1s2 2s2 2p6 3s2 3p4E. 1s2 2s2 2p6 3s2 3p5
7. An example of a physical property is
A. rustingB. decayC. souringD. low melting pointE. high heat of formation
8. A gas at STP that contains 6.02 × 1023 atoms and forms diatomic molecules will occupy
A. 11.2 LB. 22.4 LC. 33.6 LD. 67.2 LE. 1.06 qt
9. When excited electrons cascade to lower energy levels in an atom,
A. visible light is always emittedB. the potential energy of the atom increasesC. the electrons always fall back to the first energy levelD. the electrons fall indiscriminately to all levelsE. the electrons fall back to a lower unfilled energy level
10. Mass spectroscopy uses the concept that
A. charged particles are evenly deflected in a magnetic fieldB. charged particles are deflected in a magnetic field inversely to the mass of the particlesC. particles of heavier mass are deflected in a magnetic field to a greater degree than lighter particlesD. particles are evenly deflected in a magnetic fieldE. None of above
11. The bond that includes an upper and a lower sharing of electron orbitals is called
A. a pi bondB. a sigma bondC. a hydrogen bondD. a covalent bondE. an ionic bond
12. What is the boiling point of water at the top of Pikes Peak?
A. It is 100°C.B. It is >100°C since the pressure is less than at ground level.C. It is <100°C since the pressure is less than at ground level.D. It is >100°C since the pressure is greater than at ground level.E. It is <100°C since the pressure is greater than at ground level.
13. The atomic structure of the alkane series contains the hybrid orbitals designated as
A. spB. sp2C. sp3D. sp3d2E. sp4d3
14. Which of the following is (are) true for this reaction?
Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2(g)
I. It is an oxidation-reduction reaction.
II. Copper is oxidized.
III. The oxidation number of nitrogen goes from +5 to +4.
A. I onlyB. III onlyC. I and II onlyD. II and III onlyE. I, II, and III
15. Which of the following properties can be attributed to water?
I. It has a permanent dipole moment attributed to its molecular structure.
II. It is a very good conductor of electricity.
III. It has its polar covalent bonds with hydrogen on opposite sides of the oxygen atom, so that the molecule is linear.
16. All of the following statements are true for this reaction EXCEPT
HCl(g) + H2O(l) → H3O+(aq) + Cl-(aq)
A. H3O+ is the conjugate acid of H2O.B. Cl- is the conjugate base of HCl.C. H2O is behaving as a Brønsted-Lowry base.D. HCl is a weaker Brønsted-Lowry acid than H2O.E. The reaction essentially goes to completion.
17. A nuclear reactor must include which of the following parts?
I. Electric generator
II. Fissionable fuel elements
18. Which of the following salts will hydrolyze in water to form basic solutions?
19. When 1 mole of NaCl is dissolved in 1,000 grams of water, the boiling point of the water is changed to
A. 100.51°CB. 101.02°CC. 101.53°CD. 101.86°CE. 103.62°C
20. What is the structure associated with the BF3 molecule?
A. LinearB. Trigonal planarC. TetrahedronD. Trigonal pyramidalE. Bent or V-shaped
What letter designates an error in this laboratory setup?
A. A (upper part of tube)B. B (lower part of tube)C. CD. DE. E
If the reaction in question 44 created a gas, where would the contents of the flask be expelled under these conditions?
A. AB. BC. CD. DE. E
23. The most active nonmetal has
A. a high electronegativityB. a low electronegativityC. a medium electronegativityD. large atomic radiiE. a deliquescent property
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