A spherical balloon of 21 cm diameter is to be filled up with H2 at NTP from a cylinder containing the gas having a pressure of 20 atm at 27∘C. The cylinder can hold 2.82 litre of water. The number of balloons that can be filled up is:

A spherical balloon of 21 cm diameter is to be filled up with H2 at NT

1.	A spherical balloon of 21 cm diameter is to be filled up with H2 at NTP from a cylinder containing the gas having a pressure of 20 atm at 27∘C. The cylinder can hold 2.82 litre of water. The number of balloons that can be filled up is:
Answer» A spherical balloon of $21 cm$ diameter is to be filled up with $H_{2}$ at NTP from a cylinder containing the gas having a pressure of $20$ atm at $27^{\circ}$ C. The cylinder can hold $2.82$ litre of water. The number of balloons that can be filled up is: