mole concept

VITEEE 2015 Papers › Physical Chemistry questions › mole concept

a spherical balloon with a diameter of 21 cm is to be filled up with hydrogen at STP from a cylinder containg the gas at 20 atm and at 27Â°C. If the cylinder can hold 2.82 L of water,calculate the number of balloons that can be filled up.

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Jagaran Chowdhury ·2009-09-14 09:15:34

please answer

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Bicchuram Aveek ·2009-09-14 09:51:46

Vol. of balloon = 4/3 Ï€r³ = 4851 ml

Hydro. is to be filled up at NTP.

Hence

P₁=1 atm. P₂=20 atm.
T₁=273K T₂=300K
V₁=? V₂=2.82 l

Hence V₁= 51324 ml
Actual vol. to be transferred = 51324 - 2820 = 48504ml

No. of balloons = 48504/4851
= 10

If I'm right, pls reply.

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Jagaran Chowdhury ·2009-09-14 09:58:09

you r right thanx for the solution

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Arshad ~Died~ ·2009-09-14 10:00:43

yes the answer is coming out to be 10.6â‰ˆ10

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mole concept

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