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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 ]

1. 3 1
2. 1 3
3. 16 1
4. 16 1

Correct answer: 1 3

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