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Density

9. What will ...

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9. What will be the partial pressure of He and O2 respectively, if 200ml of He at 0.66atm and 400ml of O2 at 0.52atm pressure are mixed in 400ml vessel at 20 degree Celsius?

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200 m l

H e

0.66 a t m

400 m l

O_{2}

0.52 a t m

pressure are mixed in a

400 m l

25^{\circ} C

. The partial pressure of

H e

O_{2}

100 m l

200 m m

200 m l

50 m m

pressure are mixed in a container of

300 m l

then the resultant pressure of gas mixture will be (Assume gases do not combine).

Q. The vapour pressure of water at

80^{\circ} C

is 355 mm of Hg. A 100 ml vessel contains water saturated with

O_{2}

80^{\circ} C

the total pressure being 760 mm of Hg. The contents of the vessel were pumped into a 50 ml vessel at the same temperature, what is the partial pressure of

O_{2}

?

Q. At STP, a container has

3

H e, 3

O_{2}

4

N_{2}

. Without changing total pressure, if

2

O_{2}

is removed, the partial pressure of

O_{2}

will be decreased by:

200 m L

N_{2}

25^{o} C

and a pressure of

250 m m

350 m L

O_{2}

25^{o} C

and a pressure of

300 m m

so that, the volume of resulting mixture is

300 m L

, what would be the final pressure of the mixture at

25^{o} C

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