GAS WARS (see Mr. Jones for help/answer key)

  1.  If 15 L of a gas at 27^o C is warmed to 270^o C then the new volume is:
a) 150. L    b) 8.29 L     c) 27.2 L     d) 1.5 L    e) 15. L

2.  If 670. mL of gas at 2 atm. had its pressure changed to 101 kPa then  the new volume is:
 a) 335 L     b) 1340. L    c) 0.335 L    d) 1.34 L   e) 255 L

 3.  If 600. mL of gas at 4 atm. of pressure and -23^o C is changed to 227^o C  and 3 atm. then the new volume is:
 a) 900. mL   b) 1600. mL   c) 7896 mL    d) 1351 mL  e) 225 mL

 4.  If 3 L of gas is warmed from 127^o C to 254^o C then its new volume will be
 a) 3.95 L    b) 1.32 L     c) 6.0 L      d) 2.28 L   e) 0.758 L

5.  If 7.5 L of gas has its pressure changed from 0.5 atm. to 2.5 atm. then its new volume will be
    a) 0.2 L     b) 37.5 L     c) 5 L        d) 1.5 L    e) 3.5 L

6.  If a gas at 77^o C and 66.4 kPa of pressure is warmed to 427^o C in a sealed container, its pressure will inside  will become:
 a) 132.8 kPa  b) 368 kPa   c) 32.3 kPa   d) 120. kPa  e) 161 kPa

 7.  If 4.5 L of gas at -23^o C and 66.4 kPa pressure is changed to 50^o C and 99.1 kPa pressure then its new volume will become:
 a) 6.55 L    b) 3.89 L     c) 2.33 L     d) 5.19 L   e) none of these

8.  If 300. mL of gas at 27^o C is heated to 227^o C then the new volume is:
    a) 0.5 L     b) 100. mL    c) 100. L     d) 1500. mL     e) 500. L

9.  If 6.0 L of gas at 127^o C and 50.5 kPa is changed to 151.5 kPa and the temperature stays the same, then the  new volume is:
a) 18 L      b) 2 L        c) 1800. L    d) 1.8 L    e) 20. L

10. If 900. mL of gas at 4 atm. pressure and -23^o C is changed to 227^o C and 3 atm. pressure then the new volume is
 a) 1800. mL  b) 1200. mL   c) 1350. mL   d) 2400. mL  e) 900. mL

11. If 8.5 L of a gas cools from 40.^o C to 20.^o C then its new volume will be
    a) 17.0 L    b) 4.25 L     c) 9.08 L     d) 8.5 L    e) 7.96 L

12. If 25 L of gas at 30.^o C is changed to 90^o C then its new volume will be
    a) 29.95 L   b) 0.0300 L   c) 20.9 L     d) 0.0209 L  e) 75 L

13. If 60. L of gas at 50^o C is changed to 10^o C then its new volume will become: (answer in m³)
    a) 0.0526    b) 5.26E-5    c) 52.6       d) 68.5      e) 0.0685

14. If 5 L of a gas at 500^o C has its temperature changed so that its new volume becomes 25 mL then the new temperature must have been:
 a) 38.7^o C   b) 39 K       c) 4 K        d) 154 600 K  e) -200^o C

15.  If 50. m³ of a gas at a pressure of 202 kPa had its volume changed to 5 m³ then the new pressure in             ATMOSPHERES would be:
  a) 20.2 kPa    b) 20 200 kPa   c) 20. atm.   d) 0.2 atm.  e) none of these

16.  A gasoline engine has a cylinder volume of 0.75 L at the top of the  piston stroke when it fills with air at a pressure of 1.0 atm.  On the down stroke the volume becomes 25 mL.  What is the pressure inside the cylinder at the bottom of its down stroke?
 a) 30. kPa   b) 0.33 kPa   c) 0.33 atm.  d) 30. atm.  e) none of these

17.  Convert 10.1 atm. to kPa
     a) 10 kPa   b) 100 kPa   c) 101 kPa    d) 1020.1 kPa  e) none of these

18.  If 19 L of gas at 50 kPa has its pressure changed to 250 kPa then its new volume is:
     a) 3.8 L     b) 95 L       c) 950 L      d) 4750 L     e) 19 L

19.  If 6.5 L of gas at 27^o C and 101 kPa has its pressure changed to 202 kPa and its temperature to 327^o C then  its new volume is:
 a) 26.0 L    b) 6.5 L      c) 1.625 L    d) 39.4 L     e) 0.99 L

20.  When a gas is compressed with no change in temperature:
a) the spaces between the molecules become smaller      b) its molecules move faster
     c) its molecules collide harder          d) its molecules move slower
     e) its molecules fill more space

21.  Gas molecules have all the following characteristics except:
     a) moving rapidly in random fashion         b) being widely separated
     c) filling all the available space          d) diffusing at the same rate
     e) vibrational energy

22.  Which condition has the strongest intermolecular forces of attraction between molecules?
     a) solids   b) liquids    c) gases     d) plasma

23.  Which condition has the closest packing of the molecules?
   a) solids   b) liquids    c) gases
     d) during nuclear reactions   e) during chemical reactions

24.  Which condition has the greatest intermolecular distances?
     a) solids   b) liquids    c) gases     d) frozen   e) -273 K

25.  The liquid condition has molecules with:
     a) much rotational motion          b) no vibrational motion
     c) weak intermolecular forces of attraction       d) molecules far apart
     e) none of these

 26.  Elastic collisions means that molecules collide with:
    a) very sight slowing down during each collision
     b) no loss of kinetic energy    c) a rubbery rebound