I just got finished worrying about that: The pressure at 70 degrees F
is 838 psi, at 32 degrees F its 521 psi.

					- Paul Reiser -
					Email: reiser@susim.nrl.navy.mil
					Team:  Phantom Force VA
					TIP:   #261
					Gun:   Automag



>Got some questions for ya....

>What units are all these measured in?
>pressure: atm, psi, pas? (and what is the conversion to PSI?)

The units of measure is for pressure is ATM which is 1atm=14.7 lb/in2
one atmosphere is equal to 14.7 pounds per square inch.

>volume: cc, Cuft, cuM, CuIn?

Volume is in Liters.

>How many ounces does a mole of CO2 weigh?

There are 12 grams per mole or .423 ounces

>What's CO2's constant? (aren't compounds fun?)

The constant R is equal to .08206 L*atm/K*mol

>and is temp in Kelvin?

Yes

>I was getting an info sheet together on all this, and got to the end
>and realized I had the formula, but couldn't use it!

I would suggest you keep the units in metric, it is easier to calculate that 
way. If you need any more info, just email me.