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A 1.00-L gas sample at 100.°C and 550. torr contains 51.0% helium and 49.0% xenon by...

A 1.00-L gas sample at 100.°C and 550. torr contains 51.0% helium and 49.0% xenon by mass. What are the partial pressures of the individual gases?

P:He =  torr

P: Xe =  torr

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