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a piece of dry ice (solid carbon dioxide) with a mass of 20.0 g is placed...

a piece of dry ice (solid carbon dioxide) with a mass of 20.0 g is placed in a 25.0 L vessel that already contains air at 50.66 kPa and 25C after the carbon dioxide has totally sublimed what is the partial pressure of the resultant CO2 gas, and the total pressure in the container at 25 C?
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