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Question


Three 1.0 litre flasks are filled with H2, O2 and Ne, respectively, at STP. Which of the following statements is true?

A
Each flask has the same number of gas molecules
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B
The velocity of the gas molecules is the same in each flask
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C
The density of each gas is the same
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D
There are twice as many O2 and H2 molecules as Ne atoms
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Solution

The correct option is A Each flask has the same number of gas molecules
Option (A) is correct.
THe number of gas molecules are same because one mole of any gas occupies 22.4 L of space.

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