Question

Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and penetrate into the interior. Suppose that a tracheae is 1.64 mm long with a cross-sectiona area of 2.14 x 10^-9 m^2. The concentration of oxygen in the air outside the insect is 0.626 kg/m^3, and the diffusion constant is 1.32 x 10^-5 m^2/s. If the mass per second of oxygen is diffusing through a tracheae is 1.79 x 10^-12 kg/s, then find the oxygen concentration at the interior end of the tube.

Answer 1

L- mass pen Second b ojan drbbusten thrtouh the tetnatheae oxen dibbuSTo DA At DA -12 9.3 YIo = o-626 o-1016 -