A glass vessel fitted with a stopcock valve has a mass of337.428 g when evacuated. When filled with Ar, it has amass of 339.854 g. When evacuated and refilled with amixture of Ne and Ar, under the same conditions of temperatureand pressure, it has a mass of 339.076/ g. What isthe mole percent of Ne in the gas mixture?

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Chapter5: Gases
Section: Chapter Questions
Problem 162CP
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A glass vessel fitted with a stopcock valve has a mass of
337.428 g when evacuated. When filled with Ar, it has a
mass of 339.854 g. When evacuated and refilled with a
mixture of Ne and Ar, under the same conditions of temperature
and pressure, it has a mass of 339.076/ g. What is
the mole percent of Ne in the gas mixture?

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