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A container of gas X (mol.wt. 16) and ga...

A container of gas X (mol.wt. 16) and gas Y (mol. Wt. 28) in the mole ratio a:b has a mean molecular weight 20. What would be mean molecular weight if the gases are mixed in the ratio b:a under identical conditions (gases are non reacting)?

A

0.25 `dm^(3)`

B

0.5 `dm^(3)`

C

1 `dm^(3)`

D

2 `dm^(3)`

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The correct Answer is:
D
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