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

A spherical balloon of 21 cm diameter is to be filled with hydrogen at

1.	A spherical balloon of 21 cm diameter is to be filled with hydrogen at STP from a cylinder containing the gas at 20 atm at 27ºC. If the cylinder can hold 2.82 L of water, calculate the number of balloons that can be filled up.
Answer» e (P) = 20 ATM Temperature (T) = 300 K Volume of the cylinder (Vc): 2.82 L of water = 2820 Volume of the balloon (Vb): Radius of balloon: Volume of balloon: As per the STP, volume: SUBSTITUTING the formula with the RESPECTIVE values, we have,So, Amount of used to FILL the balloon: So, The total number of balloons filled: 10