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  1. Which of the following gases is the best choice to serve as the inflating gas of a balloon that must remain inflated for a long period of time?
    1. neon
    2. nitrogen
    3. hydrogen
    4. oxygen
    5. argon

  2. Which of the following atoms would have the greatest velocity if each atom had the same kinetic energy?
    1. argon
    2. bromine
    3. ammonia
    4. chlorine
    5. hydrogen

  3. A breathing mixture used by deep sea divers contains helium, oxygen and carbon dioxide. What is the partial pressure of oxygen at 101 kPa if PHe = 84 kPa and PCO2 = 0.1 kPa?
    1. 80%
    2. 100.9 kPa
    3. 16.9 kPa
    4. 101.1 kPa

  4. What happens to the partial pressure of oxygen if the air temperature is increased?
    1. it stays the same
    2. it increases
    3. it decreases

  5. If oxygen is removed from the air in the process of rusting, what happens to the partial pressure of oxygen in the air.
    1. it stays the same
    2. it decreases
    3. it increases

  6. If oxygen is removed from the air by the process of rusting, what happens to the total pressure of the air?
    1. it decreases
    2. it increases
    3. it stays the same

  7. When a container is filled with 3 moles of hydrogen, 2 moles of oxygen and 1 mole of nitrogen, the pressure in the container is 8787 kPa. What is the partial pressure of oxygen?
    1. 404 kPa
    2. 2929 kPa
    3. Impossible to calculate given the information given
    4. 202 kPa

  8. If the volume of a container of air is reduced by ½, what happens to the partial pressure of oxygen within the container?
    1. it is reduced by ½
    2. it is unchanged
    3. it is doubled

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