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You have two 1 L cylinders sealed by a frictionless piston, one filled with Helium and...

You have two 1 L cylinders sealed by a frictionless piston, one filled with Helium and the other filled with Krypton. A mass is added to each piston. Which gas system will result in an ultimate higher pressure and why?

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Answer #1

P = Moles * gas constant * temperature / volume ( in L )

Pressure is directly proportional to moles

Means more amount of mole will contribute high pressure.

If moles are same then pressure will be same

If moles are different but mass of gases are same

Moles = mass / molar mass

Higher the molar mass will have low pressure

Krypton has high molar mass as compare to helium. So helium has high pressure as compare to Krypton

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