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A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.90 atm. The partial pressure of hydrogen is 0.500 atm and the partial pressure of argon is 760. mm Hg. What is the partial pressure of helium?

  • chemistry - ,

    Ptotal = PH2 + PAr + PHe
    One unknown, solve for that.
    Note: you will need to convert sole of the units. All must be in the same unit.I would change A to atm si nce everything else is in atm. atm = mm Hg/760 mm Hg.

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