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GASACIDHEATNUCLEAR

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					GASACIDSHEATNUCLEAR
____   1. A sample of oxygen occupies 560. mL when the pressure is 800.00 mm Hg. At constant temperature,
          what volume does the gas occupy when the pressure decreases to 700.0 mm Hg?
          a. 80.0 mL                               c. 600. mL
          b. 490. mL                               d. 640. mL

____   2. The volume of a gas is 93 mL when the temperature is 91ºC. If the temperature is reduced to 0ºC
          without changing the pressure, what is the new volume of the gas?
          a. 70. mL                                   c. 120 mL
          b. 93 mL                                    d. 273 mL

____   3. The volume of a sample of oxygen is 300.0 mL when the pressure is 1.00 atm and the temperature is
          27.0ºC. At what temperature is the volume 1.00 L and the pressure 0.500 atm?
          a. 22.0ºC                                  c. 0.50 K
          b. 45.0ºC                                  d. 227ºC

____   4. The volume of a gas collected when the temperature is 11.0ºC and the pressure is 710 mm Hg measures
          14.8 mL. What is the calculated volume of the gas at 20.0ºC and 740 mm Hg?
          a. 7.8 mL                                  c. 14.6 mL
          b. 13.7 mL                                 d. 15 mL

____   5. Acids taste
          a. sweet.                                  c. bitter.
          b. sour.                                   d. salty.

____   6. Acids generally release H2 gas when they react with
          a. nonmetals.                              c. active metals.
          b. semimetals.                             d. inactive metals.

____   7. A substance that ionizes nearly completely in aqueous solutions and produces H3O+ is a
          a. weak base.                               c. weak acid.
          b. strong base.                             d. strong acid.

____   8. Which of the following is a strong acid?
          a.                                         c. CH3COOH
          b. H2SO4                                   d. H3PO4

____   9. In the equation HCl(g) + H2O(l)        +
                                               3O (aq) + Cl–(aq), which species is a Brønsted-Lowry acid?
          a. HCl                                     c. Cl–
          b. H2O                                     d. None of the above

____ 10. In the reaction represented by the equation                         , H2O is a(n)
         a. Brønsted-Lowry acid.                     c. Brønsted-Lowry base.
         b. Lewis base.                              d. Arrhenius.
____ 11. A species that remains when an acid has lost a proton is a
         a. conjugate base.                         c. strong base.
         b. conjugate acid.                         d. strong acid.

____ 12. Whose theory of acids and bases do conjugate acids and bases belong to?
         a. Arrhenius                              c. Brønsted-Lowry
         b. Lewis                                  d. None of the above

____ 13. In the reaction represented by the equation                                   , a conjugate acid-base pair is
         a. F– and H2O.                              c. H3O+ and HF.
         b. HF and F–.                               d. HF and H2O.

____ 14. In the reaction represented by the equation                                          , the conjugate base of
         HClO3 is
         a.       .                                  c.      .
         b. NH3.                                     d. not shown.

____ 15. In the reaction represented by the equation                                                      , the conjugate
         acid of CH3COO– is
         a. H2O.                                     c. H3O+.
         b. CH3COOH.                                 d. not shown.

____ 16. In the reaction represented by the equation                                                      , the conjugate
         base of H3O+ is
         a. H2O.                                     c. CH3COO–.
         b. CH3COOH.                                 d. not shown.

____ 17. In the equation HI + H2O        3O
                                           +
                                               + I–, HI is a strong acid and I– is a
         a. strong acid.                                  c. weak acid.
         b. strong base.                                  d. weak base.

____ 18. In the equation                                           is a weak base and HClO4 is a
         a. strong acid.                                 c. weak acid.
         b. strong base.                                 d. weak base.

____ 19. A 4.0 g sample of iron was heated from 0ºC to 20.ºC. It absorbed 35.2 J of energy as heat. What is the
         specific heat of this piece of iron?
         a. 2816 J/(g·ºC)                          c. 2.27 J/g
         b. 2.27 J/(g·ºC)                          d. 0.44 J/(g·ºC)

____ 20. How much energy does a copper sample absorb as energy in the form of heat if its specific heat is 0.384
         J/(g·ºC), its mass is 8.00 g, and it is heated from 10.0ºC to 40.0ºC?
         a. 0.0016 J/(g·ºC)                              c. 92.2 J
         b. 0.0016 J                                     d. 92.2 J/(g·ºC)
____ 21. Find the specific heat of a material if a 6.0 g sample absorbs 50. J when it is heated from 30ºC to 50ºC.
         a. 0.60 J                                       c. 0.42 J
         b. 0.60 J/(g·ºC)                                d. 0.42 J/(g·ºC)
____ 22. How much energy is absorbed as heat by 20. g of gold when it is heated from 25ºC to 35ºC? The
         specific heat of gold is 0.13 J/g·ºC.
         a. 26 J                                  c. 0.0006 J
         b. 26 J/(g·ºC)                           d. 0.0006 J/(g·ºC)

____ 23. A 5.0 g sample of silver is heated from 0ºC to 35ºC and absorbs 42 J of energy as heat. What is the
         specific heat of silver?
         a. 0.24 J                                   c. 0.74 J
         b. 0.24 J/(g·ºC)                            d. 0.74 J(g·ºC)

____ 24. Balance the following equation:                    ____

           a.                                          c.
           b.                                          d.

____ 25. Balance the following equation:         + ____
         a.                                            c.
           b.                                          d.

____ 26. Balance the following equation:             ____ +
         a.                                           c.
           b.                                          d.

____ 27. Which of the following forms of radiation has the greatest penetrating power?
         a. alpha particles                         c. gamma rays
         b. beta particles                          d. positrons

____ 28. Which of the following is the symbol for an alpha particle?
         a.                                         c.
           b.                                          d.
____ 29. Which of the following is the nuclear symbol for a beta particle?
         a.                                         c.
           b.                                          d.
____ 30. How many half-lives are required for three-fourths of the nuclei of one isotope in a sample to decay?
         a.                                         c. 2

           b.                                          d. 3


____ 31. What is the half-life of an isotope if 125 g of a 500 g sample of the isotope remain after 3.0 years?
         a. 1.5 years                                  c. 3.5 years
         b. 2.5 years                                  d. 4.5 years
GASACIDSHEATNUCLEAR
Answer Section

MULTIPLE CHOICE

     1. ANS: D
        Solution:



     2. ANS: A
        Solution:



     3. ANS: D
        Solution:



     4. ANS: C
        Solution:



     5.   ANS: B
     6.   ANS: C
     7.   ANS: D
     8.   ANS: B
     9.   ANS: A
    10.   ANS: A
    11.   ANS: A
    12.   ANS: C
    13.   ANS: B
    14.   ANS: A
    15.   ANS: B
    16.   ANS: A
    17.   ANS: D
    18.   ANS: A
    19.   ANS: D
          Solution:



    20. ANS: C
        Solution:

    21. ANS: D
        Solution:
22. ANS: A
    Solution:

23. ANS: B
    Solution:



24.   ANS: A
25.   ANS: B
26.   ANS: C
27.   ANS: C
28.   ANS: D
29.   ANS: C
30.   ANS: C
      Solution:




31. ANS: A
    Solution:

				
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posted:8/23/2012
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