March 29, 2017

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A piece of dry ice (solid carbon dioxide) with a mass of 5.40 g is placed in a 10.0 L vessel?
that already contains air at 715 torr and 25 degrees C. After the carbon dioxide has totally vaporized, what is the partial pressure of the carbon dioxide and the total pressure in the container at 25 degrees C?

  • chemistry - ,

    I assume the vessel is CLOSED.
    Use PV = nRT and solve for pCO2.
    n = grams CO2/molar mass CO2.
    pair (from the problem) is 715 torr.
    Ptotal = pCO2 + pair but not that pCO2 is in atm and pair is in torr.

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