Two identical cylinders at same temperature contain Helium at 2.5 atm and Argon at 1 atm respectively. What will be the pressure if both the gases are filled in one of the cylinders ?

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1.2 atm

2.5 atm

3.5 atm

1.5 atm

answer is C.

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Detailed Solution

Total number of moles remains conserved.Temperature of the gas remains unchanged.n = n1 + n2

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