When the flow-metering device of a home liquid O2 system is ...

[Chloeellawright]

When the flow-metering device of a home liquid O2 system is turned on, O2 leaves the container through a vaporizing coil, where it is heated by exposure to which of the following?
 
  a. Hot water
  b. Ambient air
  c. Electrical energy
  d. Ultrasound

Question 2

At normal liquid cylinder operating pressures, 1 lb of stored liquid O2 equals approximately how many liters of gaseous O2?
 
  a. 860.00
  b. 344.00
  c. 22.80
  d. 7.48

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Answer to Question 1

ANS: B
When flow is turned on, gaseous O2 passes through a vaporizing coil, where it is warmed by ex-posure to room temperature.

Answer to Question 2

ANS: B
At normal liquid cylinder operating pressures, 1 lb of liquid O2 equals approximately 344 L of gaseous O2.