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Engineering, 14.12.2019 01:31 gbrightwell

Helium is stored at 293 k and 500 kpa in a 1-cm-thick, 2-m-inner-diamater spherical container made of fused silica. the area where the container is located is well ventilated. determine

(a) the mass flow rate of helium by diffusion through the tank.
(b) the pressure drop in the tank after one week as a result of helium gas.

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