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A mixture of hydrogen and oxygen has vol...

A mixture of hydrogen and oxygen has volume `2000 cm^3` , temperature 300 K, pressure 100 kPa and mass 0.76 g. The ratio of number of moles of hydrogen to number of moles of oxygen in the mixture will be :
[Take gas constant `R=8.3 "JK"^(-1)"mol"^(-1)` ]

A

`1/3`

B

`3/1`

C

`1/16`

D

`16/1`

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