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A commercial cylinder contains 6.91m^(3)...

A commercial cylinder contains `6.91m^(3)` of `O_(2)` at 15.18 Mpa and`21^(@)C`. The critical constants for `O_(2)` are `T _( C ) = -118.4^(@)C, P_(C )= 50.1 ` atmp.Detemine the reduced pressure and reduced temperature for `O_(2)` under these conditions.

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The correct Answer is:
`pi =2.99 , theta = 1.90`
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