A spherical balloon of 21 cm diameter is to be filled up with hydrogen at NTP from a cylinder containing the gas at 2

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Q 2645191963.     A spherical balloon of 21 cm diameter is to be filled up with hydrogen at NTP from a cylinder containing the gas at 20 atm at 27^o C. If the cylinder can hold 2.82 L of water. calculate the number of balloons that can be filled up
JEE 1987

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