A helium/oxygen (heliox) mixture of 80/20 has a density compared ...

[abarnes]

A helium/oxygen (heliox) mixture of 80/20 has a density compared with oxygen of:
 A) 1.8 times greater
  B) 1.6 times greater
  C) 1.8 times lower
  D) 1.6 times lower

Question 2

When adjusting the flow during helium/oxygen (heliox) therapy, gas flow:
 A) should be at least 10 L/min
  B) should be set at flush (maximum setting)
  C) should be adjusted to maintain the desired PaCO2
  D) should be adjusted to keep the bag full

[tmlewis4706]

Answer to Question 1

C

Answer to Question 2

D