Liquids and Solids Practice Test

 

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    1. On Mount Everest, in Tibet, the atmospheric pressure is equal to 242 torr.  At what temperature does water boil?

        2.  

      1. 0oC

        2.  

      2. 54oC

        3.  

      3. 70oC

        4.  

      4. 78.4oC

        5.  

      5. 300oC

       

    2. What has a higher boiling point C2H5OH  or CH3OH?

      3.  

    3. Which of the following is the correct order of boiling points for NaNO3, CH3OH, C2H6, and Ne?

        4.  

      1. Ne<CH­3OH<C2H6<NaNO3

        2.  

      2. NaNO3<CH3OH<C2H6>Ne

        3.  

      3. Ne<C2H6<NaNO3<CH3OH

        4.  

      4. Ne<C2H6<CH3OH<NaNO3

        5.  

      5. C2H6<Ne<CH3OH<NaNO3

       

       

    4. Would the following molecules have the same or different viscosity? If different, who would have the higher viscosity?

      5.  

       

    5. An atom with mass 10-25 grams forms a cubic crystal with a density of 0.2 g/cm3 and a unit cell with a 10-24 cm3 volume.  The crystal structure is:

        6.  

      1. BCC

        2.  

      2. FCC

        3.  

      3. simple cubic

        4.  

      4. none of the above

       

       

    6. The unit cell in a certain lattice of atoms X and Y consists of a cube formed by a Y at each corner of the cube, an X at the center of the cube and an X at the center of each face.  The empirical formula of the compound is:

        7.  

      1. X2Y3

        2.  

      2. X5Y6

        3.  

      3. X4Y

        4.  

      4. XY

       

       

    7. Which of the following should have the highest boiling point?

        8.  

      1. Na2O

        2.  

      2. HF

        3.  

      3. NH3

        4.  

      4. N2

        5.  

      5. H2O

       

       

    8. Which one of these liquids would you expect to have the highest vapor pressure at room temperature?

        9.  

      1. water, H2O

        2.  

      2. methanol, CH3OH

        3.  

      3. ethanol, CH3CH2OH

        4.  

      4. diethyl ether, CH3OH2–O–CH2CH3

        5.  

      5. ethylene glycol, HO–CH2–CH2–OH

       

       

    9. Consider the following data concerning four different substances:

       

      Label the four substances as either ionic, network metallic, or molecular solids.

      10.  

       

    10. The temperature inside a pressure cooker is 115oC.  Calculate the vapor pressure of water inside the pressure cooker.

      11.  

       

    11. Mn crystallizes in the same type of cubic cell as Cu.  Assuming that the radius of Mn is 5.6% larger than the radius of Cu and the density of Cu is 8.96 g/cm3, calculate the density of Mn.

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