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Pressure of 1g of an ideal gas A at 27^(...

Pressure of `1g` of an ideal gas `A` at `27^(@)C` is found to be 2 bar when `2g` of another ideal gas `B` is introduced in the same flask at same temperature the pressure becomes 3 bar. Find a relationship thieir molecular masses .

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`M_(B)=4M_(A)`
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