Quiz - Physics - Partial Pressure of Nitrogen

If an air filled balloon is taken to a depth of 20m/66ft, what is the approximate partial pressure o

  • a. .8 ATA/12 psi

  • b. 1.6 ATA/23 psi

  • c. 2.4 ATA/35 psi

  • d. The answer cannot be determined from the information given.


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Remember, for most of diving we ignore that in air nitrogen is 78% and other inert gases are 1% and just call it 79% nitrogen. We also assume sea water unless the question specifically says freshwater. Either way, the answers are wide enough that we don’t even need a calculator by just rounding 3x0.8=2.4
 
3 x 14.7 x 0.79 =
 
Hey! How do I add a "Spoiler" button?
 
Or, in metric, (2+1) x 0.79 =
Is it some kind of secret spoiler society ?

Hey! How do I add a "Spoiler" button?
There are two way either you type what I typed below but without the spaces and add text in the middle OR you can click + in the menu and select spoiler


[ spoiler ]
Some text
[ /spoiler ]
 
I can see why metric is better than imperial when it comes to these sorts of calculations. It’s a good excuse to browse for a new to me SPG.
:-D Never turn down the opportunity for a shameless plug. PM me if you're serious about BAR/Metric gauges.
 
Yet another formula to find the absolute pp of a gas at any depth of sea water.
(Depth + 33) X .445 X the % of the gas in the mix.
 
Yet another formula to find the absolute pp of a gas at any depth of sea water.
(Depth + 33) X .445 X the % of the gas in the mix.
Don’t put the spaces in the spoiler tags, I put them so you can see them.
 
https://www.shearwater.com/products/peregrine/

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