1. What is the depth in fsw at 4.5 ata?

148.5 ft
115.5 ft
144 ft
None of the above

2. What is the pressure in psia at 70 fsw?

45.9
31.2
1029
64.2

3. If a breathing gas has a PpO2 of 36%, what is the partial pressure of oxygen at 96 fsw?

34.6 psia
49.3 psia
20.6 psia
42.7 psia

4. Convert the correct answer above to ata.

1.3
1.4
1.5
1.6

5. The gas law that best applies to question number three is

Law of Gaseious Diffusion
Henry's Law
Boyle's Law
Dalton's Law