Insects obtain oxygen by diffusion through tracheae, tiny tubes connecting the outside air to the interior...

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Biology

Insects obtain oxygen by diffusion through tracheae, tinytubes connecting the outside air to the interior of the body. Atypical such tube is about 2.3 mm long and has cross-sectional areaof 2.2 Ã— 10-9 m2. Assuming the concentration of oxygen inside is 48% what it is outside in the atmosphere,

a. find the concentration of oxygen in the air at 24.9 Â° C.Assume 21% is oxygen and the pressure is 1 atm.
--> using ideal gas law, a.) = 8.587 mol/m^3

b. Calculate the diffusion rate J of oxygen molecules in unitsof kg/s. Take the diffusion constant to be 1 Ã— 10-5m2/s.

Diffusion constant is 110^-5

Answer & Explanation Solved by verified expert

4.2 Ratings (741 Votes)

A The ideal gas law is represented by the mathematical expression PVnRT 1 where P pressure V volume nmoles of gas Rgas constant and T is temperature Here we have given P1 atm V21 or 021 m3 See Answer

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