Air

[texdiveguy]

Can someone tell me what one cubic foot of air weighs???

 

[texdiveguy]

Found the answer myself....sorry folks. By the way,,, .0807lbs/c.f.

 

[Sideband]

Can someone tell me what one cubic foot of air weighs???

1 cubic foot of air at standard temperature and pressure, assuming average composition, weighs approximately .0807 lbs.

Joe

 

[Charlie99]

"80 cu ft of air = 6-1/2 pounds" is close enough for most scuba work and perhaps easier to remember.

 

[edwinh]

at what pressure?

 

[alemaozinho]

0.0807lbs,peace

 

[squicker]

Whats that in proper measurements?

ie Metric. It confuses the hell out of me trying to convert from bars to psi!!

 

[Sideband]

Whats that in proper measurements?

ie Metric. It confuses the hell out of me trying to convert from bars to psi!!

If I remember right, just divide bars by 1.013 then multiply by 14.7. Not doable in your head but easy with a calculator.

Joe

 

[rab]

Whats that in proper measurements?

ie Metric. It confuses the hell out of me trying to convert from bars to psi!!

Then just stay metric! However, the question would have been phrased "How much does a liter of air weigh?" Given the tendency for cylinders to be rated in liters VOLUME rather than cu.ft CAPACITY when speaking metric, you'd probably also need to know the pressure (bar, of course) to determine the weight of the amount of air in a cylinder. (E.g., my cylinder is 15L volume and 119cu.ft capacity. Now are you confused? )

-Rob

 

[edwinh]

Air is compressible if you still do not know...

That is why when you ask for how heavy air is, you'll need the following...

Pressure, temperature, volume

you'll get mass

then you get weight by considering Gravity.

To ask how much a cubic foot of air weighs is not very meaningful.

The figure you got ".0807lbs/c.f." is probably for s.t.p (Standard Temperature & Pressure).