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The mole percentage of oxygen in a mixtu...

The mole percentage of oxygen in a mixture of 7.0 g of nitrogen and 8.0 g of oxygen is

A

8

B

16

C

21

D

50

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-SOLUTIONS -Objective Exercise -2
  1. A gaseous mixture contain four gases A, B, C and D. The mole fraction ...

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  2. Aqueous NaOH solution is labelled as 10% by weight mole fraction of th...

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  3. The mole percentage of oxygen in a mixture of 7.0 g of nitrogen and 8....

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  4. The mole fraction of solvent in 0.1 molal aqueous solution is

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  5. NaOH aqueous solution is labelled as 10% (w/v). Density of the solutio...

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  6. A solution has 1:4 molar ratio of pentane and hexane. The vapour press...

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  7. O2 is bubbled through water at 293K, assuming that O2 exerts a partial...

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  8. H2S a toxic gas with rottenegg like smell is used for the qualetative ...

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  9. Air contains O2 and N2 in the ratio 0.2 : 0.8. If Henry law constant f...

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  10. The quantity of CO2 in 500ml of soda water when packed under 2.5 atm C...

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  11. Henry’s law constant for the molality of methane in benzene at 298 K i...

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  12. 6 g. of a non volatile solute is dissolved in 90g. of water, such that...

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  13. The vapour pressure of water at 20^@C is 17.54mm Hg. then the vapour p...

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  14. An aq. solution containing 64% by weight of volatile liquid 'A' (molec...

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  15. The weight of urea to be dissolved in 100 g. of water to decrease the ...

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  16. 139.18 g of glucose is added to 178.2 g of water the vapour pressure o...

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  17. The relative lowering of vapour pressure of 0.2 molal solution in whic...

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  18. Vapour pressure of an aqueous solution is 2% less than that of the sol...

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  19. The amount of Glucose to be dissolved in 500g of water so as to produc...

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  20. A Current of dry air was first passed through the bulb containing solu...

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