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Chemistry

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?

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Jane Smith

  1. I would use P1V1/T1 = P2V2/T2 to convert from the conditions listed to STP. Then I would use PV = nRT to determine moles.

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    DrBob222

  2. 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?

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    Jane Smith

  4. Sure you do. STP is 1 atm for P and 273 Kelvin for T. Don't forget to use Kelvin for the other temperature.

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    DrBob222

  5. 2.37 STP??

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    Jane Smith

  6. 700 ?

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    Jane Smith

  8. 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.

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    DrBob222

  9. ???? Still cant figure it out...

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    Jane Smith

  10. 756.4 ?

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    Jane Smith

  12. .00869?

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    hanna banana

  13. 35*20/295=2.372
    2.372/273= .00869?

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    hanna banana

  14. 18.50?

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    Jane Smith

  16. 647.79 ??

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    Jane Smith

  17. I got 647.79 too, is that correct

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    Bonnie

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