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A cylinder contains hydrogen gas at pres...

A cylinder contains hydrogen gas at pressure of `249 kPa` and temperature `27 degree C`. Its density is (`R=8.3J mol^-1K^-1`)

A

`0.5 kg/m^3`

B

`0.2 kg/m^3`

C

`0.1 kg/m^3`

D

`0.02 kg/m^3`

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