Question

A spherical balloon of 21cm diameter is to be filled with H_{2}H2​ gas at NTP from a cylinder containingH_{2}H2​ gas at 20 atm pressure and 27°C,if the cylinder can hold 2.66L of water and NTP .Calculate the no. of balloons that can filled up?​

Answer 1

Answer:

Volume of one balloon :

=

3

4

πr

3

=

3

4

×

7

22

×(

2

21

)

3

=4851 cm

3

=4.851 litre

Let n balloons be filled; thus, total volume of hydrogen used in filling balloons

=4.851×n litre

Total volume of hydrogen in the cylinder at NTP,

V=

300×1

20×2.82×273

=51.324 litre

Actual volume of H

2

to be transferred to balloons

=51.324−2.82(2.82 litre retained in the cylinder)

=48.504 litre

No. of balloons filled

′

n

′

=

4.851

48.504

≈10

Answer 2

Explanation:

A Spherical balloon of diameter 21cm is to be filled with H2 gas at NTP(0*C and 1 atm pressure) from a cylinder containing gas at 20 atm at 27*C. If cylinder can hold 2.82L of gas / water.

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