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NOTE: A cm3 is the same as a ml. So, 1000 cm3 = 1000 ml. Also 1 dm3 is the same as 1 L.

1 dm3 = 1 L = 1000 ml = 1000 cm3

1. What is standard temperature and pressure in degrees celsius and
    kilopascals?
   

2. State Boyle's law. Explain in kinetic terms why Boyle's law holds true. SEE PAGE 421!
   

3. A cylinder contains 4.30 dm3 of a gas at a pressure of 105.0 kPa.
     Keeping the temperature constant, a piston is moved in the cylinder
     until the volume of the cylinder  is 2.8 dm3. What is the pressure at
     this volume?
   

4. A chemist collects 8.00 cm3 of gas over water at STP. What volume
     would the dry gas occupy at STP?
    

5. Maintaining constant pressure, the volume of a gas is increased form
     15.0 dm3 to 30.0 dm3 by heating it. If the original temperature was
     20.0 oC, what is the new temperature?
    

6. If a helium filled balloon had a volume of 3.40 dm3 at 25 oC and
     120 kPa, what is its volume at STP?
    

7. Which of the following gases will diffuse faster, and by how much, at
     the same temperature? NO2 and C3H8 SEE PAGE 437!
    

8. A gas of volume V is placed in a container. Determine the new volume
     if conditions are changed in each of the following ways. Express your
     answer in terms of V; for instance, 2V, 1/4V, and so on.

The pressure is doubled
The Kelvin temperature is doubled
The pressure is reduced to 1/4 the original pressure
The absolute temperature is reduced to 2/3 the original temperature
The pressure and absolute temperature are both doubled
The pressure is doubled, and the absolute temperature is halved
The absolute temperature is reduced to 3/4 the original absolute temperature, and the pressure is reduced to 1.2 the original pressure
The absolute temperature is increased to 1 1/4 times the original absolute temperature and the pressure is decreased to 1/4 times the original pressure.

9. A chemist collects 372 cm3 of gas over water at 90 oC and 111.0 kPa.
     What volume would the dry gas occupy at 2 oC and 98.0 kPa?
    

10. Why can gases be compressed more easily than solids or liquids?
     

11. According to Avagadro's principle, what is the relationship between volume and number of
     moles?

12. How many moles of argon gas are there in 20.0 L, at 25 oC, and 96.8. kPa?
    

13. A 4.44 L container holds 15.4 grams of oxygen at 22.55 oC. What is the pressure?
    

14. Magnesium will burn according to the reaction: 2Mg  +  O2  -->  2MgO What mass
     magnesium will be react with 500.0 mL of oxygen at 150.0 oC and 70.0 kPa?
    

15. Explain, in terms of the kinetic molecular theory, why the pressure inside a car tire
     increases while driving. SEE PAGE 421!
    

16. A person wakes up early in the morning and steps out on to the balcony of her hotel at Myrtle
     Beach. With a stretch of the arms, she says, "Ahhh, a breath of sea air!" If a breath of air
     is 2.4 L at body temperature (28.0 oC), how many molecules of oxygen are there in that
    "breath of fresh air?" (Air is 21% oxygen by volume.)