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A recent attempt to circumnavigate the world in a balloon used a helium filled balloon whose volume was 7 2 4 0 m deg
A recent attempt to circumnavigate the world in a balloon used a helium filled balloon whose volume was mdeg and surface area was m The skin of this balloon is mm thick and is made of a material whose helium diffusion coefficient is xdeg m The molar concentration of the helium at the inner surface of the balloon skin is kmolmdeg and the molar concentration at the outer surface is extremely small. Calculate the mass rate Kghr at which helium is lost from this balloon.
A recent attempt to circumnavigate the world in a balloon used a helium filled balloon whose volume was mdeg and surface area was m The skin of this balloon is mm thick and is made of a material whose helium diffusion coefficient is xdeg m The molar concentration of the helium at the inner surface of the balloon skin is kmolmdeg and the molar concentration at the outer surface is extremely small. Calculate the mass rate Kghr at which helium is lost from this balloon.
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