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The composition of gases in oxygen cylin...

The composition of gases in oxygen cylinder of Scuba divers

A

11.7%He, 32.1%`N_(2)`, 56.2%`N_(2)`

B

32.1%`N_(2)`, 56.2% He,11.7%`O_(2)`

C

11.7%He,56.2%`N_(2)`,32.1%`O_(2)`

D

11.7%`O_(2)`, 56.2%`N_(2),32.1%He`

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