quiz

[meterman]

the absolute pressure at 75 feet of sea water is:
a. 2.27ata/38.07 psi
b. 3.27ata/48.07 psi
c. 4.27ata/48.07 psi
d. 3.97ata/50.0 psi

 

[phunk]

Just glancing at it and not doing the math, I'd have to go with b.

 

[meterman]

the partial pressure of oxygen in air at a depth of 132 feet of sea water is:
a. .95 ata/13.42psi
b. 1.05ata/15.42psi
c. 1.25ata/16.42psi
d. 2.05ata/19.42psi
:shakehead im studding for a test and these are the kind of questions that are on there..

 

[WetFatCat]

That's (b)

 

[phunk]

Would you like the answer, or would you like to know how to figure it out?

 

[tedtim]

Studying for a quiz?

I pick b

Do we get a prize?

 

[Ray Chavez]

Sometimes metric make things easy. 75ft = 22.8 m, every 10m adds approximately 1 atm of pressure to pressure at sea level( 1atm). So 22.8/10 = 2.28.
1(sea leave presure)+2.28 = 3.28atm/ 48.7 psi

 

[El Orans]

Threads merged.

 

[ClayJar]

Threads merged.

True!

(Did I get that one right? )

 

[vegas911diver]

the partial pressure of oxygen in air at a depth of 132 feet of sea water is:
a. .95 ata/13.42psi
b. 1.05ata/15.42psi
c. 1.25ata/16.42psi
d. 2.05ata/19.42psi
:shakehead im studding for a test and these are the kind of questions that are on there..

(B) 132 ft / 33ft per atmosphere = 5 atm
21% O2 x 5 atm = 1.05ata