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Homework Statement
If equal masses of Xenon, Argon and Neon are placed in separate flasks of equal volume and same temperature, which one of the following statements is correct:
a) The pressure of Neon flask is greatest.
b) The pressure of Argon flask is greatest.
c) The pressure of Xenon flask is greatest.
d) The pressure in all 3 flasks is the same.
Homework Equations
None
The Attempt at a Solution
The answer stated was Neon because it contains the smallest molar mass out of the three. The smallest molar mass will contain the greatest number of moles. Since pressure is directly proportional to the number of moles in a gas, the pressure of Neon flask is the greatest.
I know that the pressure is directly proportional to the number of moles. But why does the smallest molar mass contain the greatest number of moles?
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