Asked by Jane Smith

A steel container of oxygen has a volume of 20.0 L at 22 C @35 atm. What is the volume @ STP? How many mol of oxygen are in the container?
Answered by DrBob222
I would use P1V1/T1 = P2V2/T2 to convert from the conditions listed to STP. Then I would use PV = nRT to determine moles.
Answered by Jane Smith
Not sure on this, I get that whole formula but I don`t have a P2V2/T2 to use in the equation. And do I need to change the 35 atm somehow by using the 760mmHG?
Answered by DrBob222
Sure you do. STP is 1 atm for P and 273 Kelvin for T. Don't forget to use Kelvin for the other temperature.
Answered by Jane Smith
2.37 STP??
Answered by Jane Smith
700 ?
Answered by DrBob222
P1 = 35 atm
V1 = 20.0 L
T1 = 22+273 = 295

P2 = 1 atm
V2 = ??
T2 = 273

(35*20/295) = (1*V2/273)
solve for V2.
It isn't 2.37 and it isn't 700.
Answered by Jane Smith
WTF???? Still cant figure it out...
Answered by Jane Smith
756.4 ?
Answered by hanna banana
.00869?
Answered by hanna banana
35*20/295=2.372
2.372/273= .00869?
Answered by Jane Smith
18.50?
Answered by Jane Smith
647.79 ??
Answered by Bonnie
I got 647.79 too, is that correct
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