A balloon is filled with 4.50 liters of helium at a pressure of 1.30 atm and a temperature of 25.0° C.
a) Discover the mass of the helium.
b) Find the acceleration of the balloon if the rubber has a mass of 4.00 g.
c) Discover the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temperature at 24.5° C.